Updated on 2025/09/09

写真a

 
YONEMITSU Kenji
 
Organization
Faculty of Science and Engineering Professor
Other responsible organization
Physics Course of Graduate School of Science and Engineering, Master's Program
Physics Course of Graduate School of Science and Engineering, Doctoral Program
External link

Degree

  • Doctor of Science ( The University of Tokyo )

  • Master of Science ( The University of Tokyo )

Education

  • 1990.6
     

    東京大学物性研究所   研究生   others

  • 1990.3
     

    The University of Tokyo   Graduate School, Division of Science   doctor course   completed

  • 1987.3
     

    The University of Tokyo   Graduate School, Division of Science   master course   completed

  • 1985.3
     

    The University of Tokyo   Faculty of Science   graduated

  • 1981.3
     

    福岡県立小倉高等学校   graduated

Research History

  • 2012.4 - Now

    Chuo University   Faculty of Science and Engineering, Department of Physics   Professor

  • 2023.4 - 2023.9

    Osaka Metropolitan University   Graduate School of Engineering

  • 2022.4 - 2022.9

    Osaka Metropolitan University   School of Engineering

  • 2007.4 - 2012.3

    Institute for Molecular Science   Associate Professor

  • 2009.10 - 2010.3

    Yokohama National University   Graduate School of Engineering

  • 2008.10 - 2009.3

    Yokohama National University   Graduate School of Engineering

  • 1996.2 - 2007.3

    Institute for Molecular Science   Associate Professor

  • 2003.4 - 2004.3

    Kyoto University   Faculty of Science

  • 1999.10 - 2000.3

    Osaka City University   Faculty of Engineering

  • 1999.4 - 2000.3

    Nagoya University   Graduate School of Engineering

  • 1997.9 - 1998.3

    University of Tsukuba   Graduate School of Science and Technology

  • 1995.7 - 1996.1

    Tohoku University   Faculty of Engineering   Associate Professor

  • 1994.9 - 1995.6

    Tohoku University   Graduate School of Information Sciences   Assistant Professor

  • 1994.2 - 1994.9

    University of Georgia (USA) Center for Simulational Physics   Postdoctoral fellow

  • 1993.1 - 1994.2

    International Center for Theoretical Physics (Italy)   Postdoctoral fellow

  • 1990.6 - 1992.12

    Los Alamos National Laboratory (USA) Theoretical Division   Postdoctoral fellow

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Professional Memberships

  • 1991.3 - Now

    American Physical Society

  • 1986.9 - Now

    The Physical Society of Japan

Research Interests

  • 低次元電子系

  • 強相関電子系

  • 分子性物質

  • 有機導体

  • 光誘起相転移

  • Condensed molecular materials

  • nonequilibrium cooperative phenomena

  • strongly correlated electron systems

Research Areas

  • Natural Science / Mathematical physics and fundamental theory of condensed matter physics

  • Natural Science / Magnetism, superconductivity and strongly correlated systems

  • Natural Science / Semiconductors, optical properties of condensed matter and atomic physics

Papers

  • Onsager Reciprocal Relations for Charge and Spin Transport in Periodically Driven Systems Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Journal of the Physical Society of Japan   94 ( 9 )   094706 - (24 pages)   2025.9

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physical Society of Japan  

    DOI: 10.7566/jpsj.94.094706

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  • Author Correction: Symmetry-protected difference between spin Hall and anomalous Hall effects of a periodically driven multiorbital metal

    Naoya Arakawa, Kenji Yonemitsu

    Communications Physics   8 ( 1 )   163 - (1 page)   2025.4

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s42005-025-02069-2

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    Other Link: https://www.nature.com/articles/s42005-025-02069-2

  • Optically tunable spin Hall effect in periodically driven monolayer transition metal dichalcogenides Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Physical Review B   111 ( 12 )   L121110 - (5 pages)   2025.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevb.111.l121110

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.111.L121110/fulltext

  • Light-Induced Mirror Symmetry Breaking and Charge Transport Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Journal of the Physical Society of Japan   93 ( 8 )   084701 - (10 pages)   2024.8

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    DOI: 10.7566/jpsj.93.084701

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  • Light-induced large and tunable valley-selective Hall effect in a centrosymmetric system Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Physical Review B   109 ( 24 )   L241201 - (6 pages)   2024.6

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    DOI: 10.1103/PhysRevB.109.L241201

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  • Symmetry-protected difference between spin Hall and anomalous Hall effects of a periodically driven multiorbital metal Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Communications Physics   6   43 - (8 pages)   2023.3

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    DOI: 10.1038/s42005-023-01153-9

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  • Photoinduced Pseudospin Polarization in a Three-Orbital Hubbard Model Reviewed

    Kenji Yonemitsu

    Journal of the Physical Society of Japan   91 ( 10 )   104702 - (14 pages)   2022.10

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physical Society of Japan  

    DOI: 10.7566/jpsj.91.104702

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  • Light-induced magnetization driven by interorbital charge motion in the spin-orbit assisted Mott insulator α-RuCl3 Reviewed

    T. Amano, Y. Kawakami, H. Itoh, K. Konno, Y. Hasegawa, T. Aoyama, Y. Imai, K. Ohgushi, Y. Takeuchi, Y. Wakabayashi, K. Goto, Y. Nakamura, H. Kishida, K. Yonemitsu, S. Iwai

    Physical Review Research   4 ( 3 )   L032032 - (6 pages)   2022.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/physrevresearch.4.l032032

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevResearch.4.L032032/fulltext

  • Petahertz charge dynamics in a correlated organic superconductor Reviewed

    Shinichiro Iwai, Yohei Kawakami, Hirotake Itoh, Kenji Yonemitsu

    Faraday Discussions   237   353 - 367   2022.6

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Unconventional stimulated emission and second harmonic generation (SHG) in an ultrafast no-scattering time window are induced by a nearly single-cycle 6 fs near infrared electric field of 10 MV cm−1 in an organic superconductor (κ-(h-ET)2Cu[N(CN)2]Br).

    DOI: 10.1039/d2fd00004k

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  • Petahertz Correlated Electron Dynamics in an Organic Superconductor

    Shinichiro Iwai, Yohei Kawakami, Hirotake Itoh, Kenji Yonemitsu

    Butsuri   77   304 - 309   2022.5

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    Language:Japanese  

    DOI: 10.11316/butsuri.77.5_304

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  • Ultrafast magnetization driven by spiral current in Kitaev spin liquid α-RuCl3

    T. Amano, Y. Kawakami, H. Itoh, T. Aoyama, Y. Imai, K. Ohgushi, Y. Nakamura, H. Kishida, K. Yonemitsu, S. Iwai

    The International Conference on Ultrafast Phenomena (UP) 2022   2022

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    Publishing type:Research paper (international conference proceedings)   Publisher:Optica Publishing Group  

    In a honeycomb-lattice Mott insulator α-RuCl3, an ultrafast magnetization is induced by circularly polarized excitation of spin-orbit excitons. An ultrafast 6-fs measurement clarifies that the orbital moment emerges from a coherent inter-orbital charge motion.

    DOI: 10.1364/up.2022.tu2a.2

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  • Polarization-dependent magnetic properties of periodically driven α−RuCl3 Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Physical Review B   104 ( 21 )   214413 (22 pages)   2021.12

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society (APS)  

    DOI: 10.1103/PhysRevB.104.214413

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.104.214413/fulltext

  • Mechanism for Synchronization of Charge Oscillations in Dimer Lattices Reviewed

    Kenji Yonemitsu, Philipp Werner

    Journal of the Physical Society of Japan   90 ( 4 )   044713 (8 pages)   2021.4

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Physical Society of Japan  

    DOI: 10.7566/jpsj.90.044713

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  • Floquet engineering of Mott insulators with strong spin-orbit coupling Reviewed

    Naoya Arakawa, Kenji Yonemitsu

    Physical Review B   103 ( 10 )   L100408 (5 pages)   2021.3

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    DOI: 10.1103/physrevb.103.l100408

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.103.L100408/fulltext

  • Competition between Interactions and Randomness in Photoinduced Synchronization of Charge Oscillations on a Dimer Lattice Reviewed

    Toshiya Shimada, Kenji Yonemitsu

    Journal of the Physical Society of Japan   89 ( 8 )   084701 - 084701   2020.8

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    DOI: 10.7566/jpsj.89.084701

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  • Photoinduced dynamics of excitonic order and Rabi oscillations in the two-orbital Hubbard model Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    Physical Review B   102 ( 7 )   075118 (20 pages)   2020.8

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    DOI: 10.1103/physrevb.102.075118

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    Other Link: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.102.075118/fulltext

  • Petahertz non-linear current in a centrosymmetric organic superconductor Reviewed

    Y. Kawakami, T. Amano, H. Ohashi, H. Itoh, Y. Nakamura, H. Kishida, T. Sasaki, G. Kawaguchi, H. M. Yamamoto, K. Yamamoto, S. Ishihara, K. Yonemitsu, S. Iwai

    Nature Communications   11   4138 (6 pages)   2020.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s41467-020-17776-3

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    Other Link: http://www.nature.com/articles/s41467-020-17776-3

  • Photoinduced Dynamics of Commensurate Charge Density Wave in 1T-TaS2 Based on Three-Orbital Hubbard Model Reviewed

    T. N. Ikeda, H. Tsunetsugu, K. Yonemitsu

    Applied Sciences   9 ( 1 )   70 (13 pages)   2019.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3390/app9010070

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  • Charge Oscillations Emerging after Application of an Intense Light Field to Superconductors on a Dimer Lattice Reviewed

    K. Yonemitsu

    Journal of the Physical Society of Japan   87 ( 12 )   124703 (9 pages)   2018.12

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    DOI: 10.7566/JPSJ.87.124703

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  • Strong light-field effects driven by nearly single-cycle 7fs light-field in correlated organic conductors Reviewed

    Y. Kawakami, H. Itoh, K. Yonemitsu, S. Iwai

    J. Phys. B: At. Mol. Opt. Phys.   51 ( 17 )   174005 (15 pages)   2018.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/1361-6455/aad40a

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  • Photoinduced enhancement of excitonic order in the two-orbital Hubbard model Reviewed

    Yasuhiro Tanaka, Manabu Daira, Kenji Yonemitsu

    Physical Review B   97 ( 11 )   115105 (9 pages)   2018.3

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    DOI: 10.1103/PhysRevB.97.115105

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  • Photoinduced high-Frequency charge oscillations in dimerized systems Reviewed

    Kenji Yonemitsu

    Journal of the Physical Society of Japan   87 ( 4 )   044708 (8 pages)   2018

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    DOI: 10.7566/JPSJ.87.044708

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  • Nonlinear charge oscillation driven by a single-cycle light field in an organic superconductor Reviewed

    Kawakami, Y, Amano, T, Yoneyama, Y, Akamine, Y, Itoh, H, Kawaguchi, G, Yamamoto, H. M, Kishida, H, Itoh, K, Sasaki, T, Ishihara, S, Tanaka, Y, Yonemitsu, K, Iwai, S

    Nature Photonics   12 ( 8 )   474 - 478   2018

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    DOI: 10.1038/s41566-018-0194-4

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  • High-Frequency Analysis of Effective Interactions and Bandwidth for Transient States after Monocycle Pulse Excitation of Extended Hubbard Model Reviewed

    Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   86 ( 6 )   064702 (8 pages)   2017.6

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    DOI: 10.7566/JPSJ.86.064702

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  • Polarization selectivity of charge localization induced by a 7-fs nearly single-cycle light field in an organic metal Reviewed

    Y. Kawakami, Y. Yoneyama, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, S. Iwai

    PHYSICAL REVIEW B   95 ( 20 )   201105(R) (5 pages)   2017.5

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    DOI: 10.1103/PhysRevB.95.201105

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  • Photoinduced Enhancement of Anisotropic Charge Correlations on Triangular Lattices with Trimers Reviewed

    Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   86 ( 2 )   024711 (8 pages)   2017.2

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    DOI: 10.7566/JPSJ.86.024711

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  • Light-field induced reduction of "plasma" frequency in organic conductor Reviewed

    Y. Naitoh, S. Iwai, Y. Kawakami, H. Itoh, S. Ishihara, K. Yamamoto, K. Yonemitsu

    Optics InfoBase Conference Papers F20-UP   2016.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OSA  

    DOI: 10.1364/up.2016.utu4a.26

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  • Optical freezing of charge motion in organic metal Reviewed

    S. Iwai, Y. Naitoh, Y. Kawakami, H. Itoh, S. Ishihara, K. Yamamoto, H. Kishida, K. Yonemitsu

    Optics InfoBase Conference Papers F20-UP   2016.7

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    DOI: 10.1364/up.2016.utu4a.24

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  • Ultrafast response of plasmalike reflectivity edge in (TMTTF)2AsF6 driven by a 7-fs 1.5-cycle strong-light field Reviewed

    Y. Naitoh, Y. Kawakami, T. Ishikawa, Y. Sagae, H. Itoh, K. Yamamoto, T. Sasaki, M. Dressel, S. Ishihara, Y. Tanaka, K. Yonemitsu, S. Iwai

    Physical Review B   93 ( 16 )   165126 (5 pages)   2016.4

  • Electron Correlation after Pulse Excitation and High-Frequency Expansion within Floquet Theory for α-(BEDT-TTF)2I3

    Yonemitsu Kenji

    Meeting Abstracts of the Physical Society of Japan   71   1233 - 1233   2016

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.71.2.0_1233

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  • Ultrafast critical phenomena near the metal-Mott insulator phase boundary in κ-type ET salts II

    Kawakami Y., Naitoh Y., Kato T., Yoneyama Y., Itoh H., Yoneyama N., Sasaki T., Yonemitsu K., Ishihara S., Iwai S.

    Meeting Abstracts of the Physical Society of Japan   71   1240 - 1240   2016

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    Language:Japanese   Publisher:The Physical Society of Japan  

    DOI: 10.11316/jpsgaiyo.71.2.0_1240

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  • Phase Separation Induced by Symmetric Monocycle Optical Pulse in Extended Hubbard Models Reviewed

    Hiroki Yanagiya, Yasuhiro Tanaka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   84 ( 9 )   094705 (9 pages)   2015.9

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    DOI: 10.7566/JPSJ.84.094705

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  • Negative-Temperature State Formed and Interactions Inverted by Symmetric Monocycle Optical Pulse Excitation Reviewed

    Kenji Yonemitsu, Keita Nishioka

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   84 ( 5 )   054702 (10 pages)   2015.5

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    DOI: 10.7566/JPSJ.84.054702

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  • Spontaneous formation of correlated charge coherence induced by 1.5-cycle pulse in 1-D organic metal (TMTTF)2AsF6 Reviewed

    T. Ishikawa, Y. Sagae, Y. Naito, J. Ichimura, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, S. Ishihara, T. Sasaki, K. Yonemitsu, S. Iwai

    Springer Proceedings in Physics   162   244 - 247   2015

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Springer Science and Business Media, LLC  

    DOI: 10.1007/978-3-319-13242-6_59

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  • 22pPSB-28 Sources of Negative Differential Resistance in Band Insulators Attached to Electrodes

    Tanaka Y., Yonemitsu K.

    Meeting Abstracts of the Physical Society of Japan   70   3062 - 3062   2015

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    Language:Japanese   Publisher:The Physical Society of Japan (JPS)  

    DOI: 10.11316/jpsgaiyo.70.1.0_3062

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  • 21aCP-3 Stability and Photoinduced Dynamics of Charge-Density-Wave State in TaS_2

    Fujinuma R., Yonemitsu K., Tanaka Y.

    Meeting Abstracts of the Physical Society of Japan   70   1432 - 1432   2015

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    Language:Japanese   Publisher:The Physical Society of Japan (JPS)  

    DOI: 10.11316/jpsgaiyo.70.1.0_1432

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  • 17aCF-4 Negative-Temperature State, Inversion of Interactions, and Dynamical Localization

    Yonemitsu Kenji

    Meeting Abstracts of the Physical Society of Japan   70   1208 - 1209   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_1208

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  • 22pCP-9 Inverted Interactions and Phase Separation Triggered by Strong Optical Electric Field in the Extended Hubbard Model

    Yanagiya H., Tanaka Y., Yonemitsu K.

    Meeting Abstracts of the Physical Society of Japan   70   1521 - 1521   2015

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    Language:Japanese   Publisher:The Physical Society of Japan (JPS)  

    DOI: 10.11316/jpsgaiyo.70.1.0_1521

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  • Roles of Potential Gradient and Electrode Bandwidth on Negative Differential Resistance in One-Dimensional Band Insulator Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 12 )   124704 (4 pages)   2014.12

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    DOI: 10.7566/JPSJ.83.124704

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  • Optical freezing of charge motion in an organic conductor Reviewed

    Takahiro Ishikawa, Yuto Sagae, Yota Naitoh, Yohei Kawakami, Hirotake Itoh, Kaoru Yamamoto, Kyuya Yakushi, Hideo Kishida, Takahiko Sasaki, Sumio Ishihara, Yasuhiro Tanaka, Kenji Yonemitsu, Shinichiro Iwai

    NATURE COMMUNICATIONS   5   5528 (6 pages)   2014.11

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    DOI: 10.1038/ncomms6528

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  • Coherent dynamics of photoinduced phase formation in a strongly correlated organic crystal Reviewed

    Yoshitaka Matsubara, Sho Ogihara, Jiro Itatani, Nobuya Maeshima, Kenji Yonemitsu, Tadahiko Ishikawa, Yoichi Okimoto, Shin-ya Koshihara, Takaaki Hiramatsu, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Ken Onda

    PHYSICAL REVIEW B   89 ( 16 )   161102(R) (5 pages)   2014.4

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    DOI: 10.1103/PhysRevB.89.161102

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  • Intramolecular Orbital Excitations and Frequency Modulation of Molecular Vibrations during Photoinduced Charge-Order Melting in Et$_2$Me$_2$Sb[Pd(dmit)$_2$]$_2$ Reviewed

    K. Nishioka, K. Yonemitsu

    JPS Conference Proceedings   1   012044 (4 pages)   2014.3

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    Publishing type:Research paper (international conference proceedings)   Publisher:Journal of the Physical Society of Japan  

    DOI: 10.7566/JPSCP.1.012044

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  • Intra- and Interdimer Transfer Integrals Effectively Modified by Pulsed and Continuous-Wave Lasers for Controlling Charge Transfers in Molecular Crystals Reviewed

    Keita Nishioka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 2 )   024706 (9 pages)   2014.2

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    DOI: 10.7566/JPSJ.83.024706

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  • Spontaneous formation of correlated charge coherence induced by 1.5-cycle pulse in 1-D organic metal (TMTTF)2AsF6

    T. Ishikawa, Y. Sagae, Y. Naito, J. Ichimura, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, S. Ishihara, T. Sasaki, K. Yonemitsu, S. Iwai

    Optics InfoBase Conference Papers   2014

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Optical Society of America (OSA)  

    DOI: 10.1364/up.2014.07.mon.p1.40

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  • Charge order and possible bias-induced metastable state in the organic conductor β-(meso-DMBEDT-TTF)2PF6: Effects of structural distortion Reviewed

    Y. Tanaka, K. Yonemitsu

    Journal of Physics Condensed Matter   25 ( 46 )   465603 (6pp)   2013.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/0953-8984/25/46/465603

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  • Intra- and Interdimer Electron-Phonon Concerted Mechanism of Photoinduced Charge-Order Melting in Metal Complex Et2Me2Sb[Pd(dmit)(2)](2) Reviewed

    Keita Nishioka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   82 ( 9 )   094716 (10 pages)   2013.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7566/JPSJ.82.094716

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  • Current-voltage characteristics and breakdown mechanism in one-dimensional band and mott insulators attached to electrodes Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    Journal of the Korean Physical Society   62 ( 12 )   2164 - 2167   2013.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3938/jkps.62.2164

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  • Current-Induced Cooling Phenomenon in a Two-Dimensional Electron Gas Under a Magnetic Field Reviewed

    Naomi Hirayama, Akira Endo, Kazuhiro Fujita, Yasuhiro Hasegawa, Naomichi Hatano, Hiroaki Nakamura, Ryoen Shirasaki, Kenji Yonemitsu

    JOURNAL OF LOW TEMPERATURE PHYSICS   172 ( 1-2 )   132 - 153   2013.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10909-012-0852-8

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  • Theory of MMX-chain compounds Reviewed

    Kenji Yonemitsu

    Material Designs and New Physical Properties in MX- and MMX-Chain Compounds   9783709113172   243 - 264   2013.6

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    Language:English   Publishing type:Part of collection (book)   Publisher:Springer-Verlag Wien  

    DOI: 10.1007/978-3-7091-1317-2_12

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  • Normal-Mode Analysis for Intra- and Intermolecular Electron-Phonon Coupled Systems with Charge-Ordered and Dimer-Mott Ground States Reviewed

    Keita Nishioka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   82 ( 2 )   024701 (11 pages)   2013.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7566/JPSJ.82.024701

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  • Transport-Coefficient Dependence of Current-Induced Cooling Effect in a Two-Dimensional Electron Gas Reviewed

    Naomi Hirayama, Akira Endo, Kazuhiro Fujita, Yasuhiro Hasegawa, Naomichi Hatano, Hiroaki Nakamura, Ryoen Shirasaki, Kenji Yonemitsu

    JOURNAL OF ELECTRONIC MATERIALS   41 ( 6 )   1535 - 1539   2012.6

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  • Roles of molecular vibrations in photoinduced insulator-to-metal and neutral-to-ionic transitions Reviewed

    Kenji Yonemitsu

    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   249 ( 5 )   975 - 978   2012.5

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    DOI: 10.1002/pssb.201100533

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  • Two-pulse excitation for efficient formation of an sp(3) nanodomain with frozen shear in a graphite crystal Reviewed

    Keita Nishioka, Keiichiro Nasu, Kenji Yonemitsu

    JOURNAL OF PHYSICS-CONDENSED MATTER   24 ( 20 )   205402 (6pp)   2012.5

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    DOI: 10.1088/0953-8984/24/20/205402

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  • Dimerization-induced spin-charge coupling in one-dimensional Mott insulators revealed by femtosecond reflection spectroscopy of Rb-tetracyanoquinodimethane salts Reviewed

    H. Uemura, N. Maeshima, K. Yonemitsu, H. Okamoto

    Physical Review B - Condensed Matter and Materials Physics   85 ( 12 )   125112 (7 pages)   2012.3

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    DOI: 10.1103/PhysRevB.85.125112

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  • Theory of Photoinduced Phase Transitions in Molecular Conductors: Interplay Between Correlated Electrons, Lattice Phonons and Molecular Vibrations Reviewed

    Kenji Yonemitsu

    CRYSTALS   2 ( 1 )   56 - 77   2012.3

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  • Interplay between Correlated Electrons and Quantum Phonons in Charge-Ordered and Mott-Insulating Organic Compounds Reviewed

    K. Yonemitsu, N. Maeshima, Y. Tanaka

    ACTA PHYSICA POLONICA A   121 ( 2 )   372 - 374   2012.2

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  • Theory of photoinduced melting of charge order in Et2Me2Sb[Pd(dmit)(2)](2) Reviewed

    Keita Nishioka, Kenji Yonemitsu

    PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 5   9 ( 5 )   1213 - 1215   2012

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    DOI: 10.1002/pssc.201100602

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  • Theory of nonlinear conduction for charge-ordered states in quasi-two-dimensional organic conductors Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 5   9 ( 5 )   1186 - 1188   2012

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    DOI: 10.1002/pssc.201100642

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  • Renormalization of hopping integrals in coexistence phase of stripe and d-wave superconductivity in two-dimensional Hubbard model Reviewed

    Mitake Miyazaki, Kunihiko Yamaji, Takashi Yanagisawa, Kenji Yonemitsu

    ADVANCES IN SUPERCONDUCTIVITY XXIV   27   64 - 67   2012

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    DOI: 10.1016/j.phpro.2012.03.411

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  • Nonlinear Conduction by Melting of Stripe-Type Charge Order in Organic Conductors with Triangular Lattices Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 10 )   103702 (4 pages)   2011.10

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    DOI: 10.1143/JPSJ.80.103702

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  • Photoexcitation-Energy-Dependent Transition Pathways from a Dimer Mott Insulator to a Metal Reviewed

    Kenji Yonemitsu, Satoshi Miyashita, Nobuya Maeshima

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 8 )   084710 (5 pages)   2011.8

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  • Effects of Lattice and Molecular Phonons on Photoinduced Neutral-to-Ionic Transition Dynamics in Tetrathiafulvalene-p-chloranil Reviewed

    Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 8 )   084707 (7 pages)   2011.8

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    DOI: 10.1143/JPSJ.80.084707

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  • Quantum Oscillations of Thermoelectric Effects in a Pseudo-one-dimensional Electron Gas With a Spin-Orbit Interaction Reviewed

    Hiroaki Nakamura, Naomichi Hatano, Ryoen Shirasaki, Naomi Hirayama, Kenji Yonemitsu

    JOURNAL OF ELECTRONIC MATERIALS   40 ( 5 )   601 - 605   2011.5

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    DOI: 10.1007/s11664-010-1470-3

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  • Temperature Distribution in Two-Dimensional Electron Gases under a Strong Magnetic Field Reviewed

    Naomi Hirayama, Akira Endo, Kazuhiro Fujita, Yasuhiro Hasegawa, Naomichi Hatano, Hiroaki Nakamura, Ryoen Shirasaki, Kenji Yonemitsu

    JOURNAL OF ELECTRONIC MATERIALS   40 ( 5 )   529 - 532   2011.5

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    DOI: 10.1007/s11664-010-1427-6

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  • Crossover from bias-induced to field-induced breakdown in one-dimensional band and Mott insulators attached to electrodes Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    PHYSICAL REVIEW B   83 ( 8 )   085113 (11 pages)   2011.2

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    DOI: 10.1103/PhysRevB.83.085113

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  • Photoinduced insulator-to-metal transition dynamics in models for quasi-two-dimensional organic conductors Reviewed

    Kenji Yonemitsu, Yasuhiro Tanaka, Satoshi Miyashita, Nobuya Maeshima

    PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS   248 ( 2 )   486 - 490   2011.2

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    DOI: 10.1002/pssb.201000567

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  • Photoinduced dynamics of the multi-orbital Hubbard model Reviewed

    Nobuya Maeshima, Ken-ichi Hino, Kenji Yonemitsu

    PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 1   8 ( 1 )   213 - 216   2011

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    DOI: 10.1002/pssc.201000648

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  • Early-Stage Dynamics of Light-Matter Interaction Leading to the Insulator-to-Metal Transition in a Charge Ordered Organic Crystal Reviewed

    Y. Kawakami, T. Fukatsu, Y. Sakurai, H. Unno, H. Itoh, S. Iwai, T. Sasaki, K. Yamamoto, K. Yakushi, K. Yonemitsu

    PHYSICAL REVIEW LETTERS   105 ( 24 )   246402 (4 pages)   2010.12

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    DOI: 10.1103/PhysRevLett.105.246402

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  • Photoinduced coherent oscillations in the one-dimensional two-orbital Hubbard model Reviewed

    N. Maeshima, K. Hino, K. Yonemitsu

    Physical Review B - Condensed Matter and Materials Physics   82 ( 16 )   161105(R) (4 pages)   2010.10

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    DOI: 10.1103/PhysRevB.82.161105

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  • 24aRE-9 Photoinduced Dynamics in a Dimer-Mott Phase : Modulation of Interactions vs. Introduction of Carriers

    Yonemitsu,Kenji, Miyashita,Satoshi, Maeshima,Nobuya

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   693   2010.8

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  • 24aRE-4 The effect of the electron-lattice interaction on charge dynamics in one-dimensional Mott insulators

    Uemura,H, Maeshima,N, Yonemitsu,K, Okamoto,H

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   692   2010.8

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  • Frustration and lattice effects on photoinduced melting of charge orders in quasi-two-dimensional organic conductors Reviewed

    Kenji Yonemitsu, Satoshi Miyashita, Yasuhiro Tanaka

    PHYSICA B-CONDENSED MATTER   405 ( 11 )   S369 - S372   2010.6

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    DOI: 10.1016/j.physb.2009.11.105

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  • Theory of I-V characteristics for two-dimensional charge-ordered electron systems at quarter filling Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    PHYSICA B-CONDENSED MATTER   405 ( 11 )   S211 - S213   2010.6

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    DOI: 10.1016/j.physb.2009.12.065

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  • 2軌道縮退ハバード模型における光誘起ダイナミクス(研究会「相関電子系における光誘起現象」報告,研究会報告)

    前島, 展也, 日野, 健一, 米満, 賢治

    Bussei Kenkyu   94 ( 2 )   219 - 219   2010.5

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  • 20aHK-1 Photoinduced dynamics in a multi-orbital Hubbard model

    Maeshima,Nobuya, Hino,Ken-ichi, Yonemitsu,Kenji

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   728 - 728   2010.3

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  • Charge, Lattice, and Spin Dynamics in Photoinduced Phase Transitions from Charge-Ordered Insulator to Metal in Quasi-Two-Dimensional Organic Conductors Reviewed

    Satoshi Miyashita, Yasuhiro Tanaka, Shinichiro Iwai, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   79 ( 3 )   034708 (9 pages)   2010.3

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    DOI: 10.1143/JPSJ.79.034708

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  • Growth Dynamics of Photoinduced Domains in Two-Dimensional Charge-Ordered Conductors Depending on Stabilization Mechanisms Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   79 ( 2 )   024712 (8 pages)   2010.2

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    DOI: 10.1143/JPSJ.79.024712

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  • Photoinduced dynamics in the one-dimensional two-orbital degenerate Hubbard model Reviewed

    Nobuya Maeshima, Kenji Yonemitsu, Ken-ichi Hino

    INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009)   200   012109 (4 pages)   2010

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    DOI: 10.1088/1742-6596/200/1/012109

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  • 26aXB-11 Photoinduced dynamics in a two-orbital degenerate Hubbard mode

    Maeshima,Nobuya, Hino,Ken-ichi, Yonemitsu,Kenji

    Meeting abstracts of the Physical Society of Japan   64 ( 2 )   634   2009.8

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  • Nonequilibrium Green's-Function Approach to the Suppression of Rectification at Metal-Mott-Insulator Interfaces Reviewed

    Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   78 ( 5 )   054705 (8 pages)   2009.5

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    DOI: 10.1143/JPSJ.78.054705

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  • Coupling-dependent rate of energy transfer from photoexcited Mott insulators to lattice vibrations Reviewed

    Kenji Yonemitsu, Nobuya Maeshima

    Physical Review B - Condensed Matter and Materials Physics   79 ( 12 )   125118 (6 pages)   2009.3

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    DOI: 10.1103/PhysRevB.79.125118

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  • Erratum to Two papers on charge order with structural distortion in organic conductors (Journal of the Physical Society of Japan (2008) 77, (034708)) Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    Journal of the Physical Society of Japan   78 ( 1 )   2009.1

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    DOI: 10.1143/JPSJ.78.018002

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  • Energy transfer to phonons after photoexcitation in one-dimensional correlated electron-phonon systems Reviewed

    Kenji Yonemitsu, Nobuya Maeshima

    PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1   6 ( 1 )   240 - +   2009

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    DOI: 10.1002/pssc.200879904

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  • Photoinduced melting of charge order in quasi-two-dimensional organic conductors Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3)   148   012063 (3 pages)   2009

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    DOI: 10.1088/1742-6596/148/1/012063

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  • Mott insulating state in a quarter-filled two-orbital Hubbard chain with different bandwidths Reviewed

    Satoshi Miyashita, Yasufumi Yamashita, Kenji Yonemitsu, Akihisa Koga, Norio Kawakami

    25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4   150 ( 4 )   042128 (4 pages)   2009

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    DOI: 10.1088/1742-6596/150/4/042128

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  • Photogenerated polaronic state in a one-dimensional dimerized Mott insulator K-TCNQ Reviewed

    Nobuya Maeshima, Kenji Yonemitsu, Ken-ichi Hino

    LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3)   148   012005 (4 pages)   2009

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    DOI: 10.1088/1742-6596/148/1/012005

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  • Role of electron-lattice couplings on charge order in quasi-two-dimensional organic conductors Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4   150 ( 4 )   042204 (4 pages)   2009

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    DOI: 10.1088/1742-6596/150/4/042204

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  • Effects of spin fluctuations, charge fluctuations and lattice distortions on charge orders in theta- and alpha-type BEDT-TTF salts Reviewed

    Satoshi Miyashita, Kenji Yonemitsu

    LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3)   148   012006 (3 pages)   2009

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    DOI: 10.1088/1742-6596/148/1/012006

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  • Photoinduced melting and charge order in quarter-filled organic conductors: Itinerant electron systems with competing interactions Reviewed

    Kenji Yonemitsu, Nobuya Maeshima, Yasuhiro Tanaka, Satoshi Miyashita

    LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3)   148   012054 (5 pages)   2009

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    DOI: 10.1088/1742-6596/148/1/012054

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  • Enhanced coherent dynamics near a transition between neutral quantum-paraelectric and ionic ferroelectric phases in the quantum Blume-Emery-Griffiths model Reviewed

    Kenji Yonemitsu

    PHYSICAL REVIEW B   78 ( 20 )   205102 (5 pages)   2008.11

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    DOI: 10.1103/PhysRevB.78.205102

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  • Modified Barrett formula near the neutral-ionic quantum phase transition Reviewed

    Y. Yamashita, K. Yonemitsu

    Journal of Physics: Conference Series   132   012019 (5 pages)   2008.10

  • Spin and charge fluctuations and lattice effects on charge ordering in alpha-(BEDT-TTF)(2)I-3 Reviewed

    Satoshi Miyashita, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 9 )   094712 (6 pages)   2008.9

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  • Photoinduced change in the charge order pattern in the quarter-filled organic conductor (EDO-TTF)(2)PF6 with a strong electron-phonon interaction Reviewed

    Ken Onda, Sho Ogihara, Kenji Yonemitsu, Nobuya Maeshima, Tadahiko Ishikawa, Yoichi Okimoto, Xiangfeng Shao, Yoshiaki Nakano, Hideki Yamochi, Gunzi Saito, Shin-ya Koshihara

    PHYSICAL REVIEW LETTERS   101 ( 6 )   067403 (4 pages)   2008.8

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    DOI: 10.1103/PhysRevLett.101.067403

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  • Theory of photoinduced phase transitions in itinerant electron systems Reviewed

    Kenji Yonemitsu, Keiichiro Nasu

    PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS   465 ( 1 )   1 - 60   2008.8

  • Polaronic states with spin-charge-coupled excitation in a one-dimensional dimerized Mott insulator K-TCNQ Reviewed

    Nobuya Maeshima, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 7 )   074713 (6 pages)   2008.7

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    DOI: 10.1143/JPSJ.77.074713

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  • Theory of Photoinduced Phase Transitions : Coherent Oscillations and Transient States

    YONEMITSU Kenji

    rle   36 ( 6 )   343 - 348   2008.6

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    Theoretical understanding of photoinduced phase transitions and their dynamics is reviewed from the viewpoint of coherent oscillations and transient states in condensed molecular materials with quasi-one-dimensional electronic conduction. In the mixed-stack organic charge-transfer compound TTF-CA (TTF: tetrathiafulvalene, CA: chloranil), the photoinduced transition from the ionic phase to the neutral phase is accompanied with coherent motion of a neutral-ionic domain boundary. Its high cooperativity is realized by the sufficiently strong, interchain Coulomb coupling in the ionic phase. In the quarter-filled-band organic salt (EDO-TTF) 2PF6 (EDO: ethylenedioxy), the photoinduced melting of charge order is accompanied with oscillations in transient reflectivity. The degree of coherence in these oscillations depends on the probe photon energy. It is caused by different space and time scales of observed electronic motion and relevant phonon motion.

    DOI: 10.2184/lsj.36.343

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  • Charge order with structural distortion in organic conductors: Comparison between theta-(ET)(2)RbZn(SCN)(4) and alpha-(ET)(2)I-3 Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 3 )   034708 (9 pages)   2008.3

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  • Suppression of rectification at metal-Mott insulator interfaces Reviewed

    Kenji Yonemitsu, Nobuya Maeshima, Tatsuo Hasegawa

    PHYSICAL REVIEW B   76 ( 23 )   235118 (6 pages)   2007.12

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    DOI: 10.1103/PhysRevB.76.235118

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  • Photoinduced melting of charge order in a quarter-filled electron system coupled with different types of phonons Reviewed

    Kenji Yonemitsu, Nobuya Maeshima

    PHYSICAL REVIEW B   76 ( 7 )   075105 (6 pages)   2007.8

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    DOI: 10.1103/PhysRevB.76.075105

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  • Charge-transfer excitations in one-dimensional dimerized mott insulators Reviewed

    Nobuya Maeshima, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 ( 7 )   074713 (5 pages)   2007.7

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  • Relaxation process in the photoinduced neutral-ionic paraelectric-ferroelectric phase transition in tetrathiafulvalene-p-chloranil Reviewed

    Hitoshi Inoue, Kenji Yonemitsu

    PHYSICAL REVIEW B   75 ( 23 )   235125 (13 pages)   2007.6

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    DOI: 10.1103/PhysRevB.75.235125

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  • Charge ordering in theta-(BEDT-TTF)(2)RbZn(SCN)(4): Cooperative effects of electron correlations and lattice distortions Reviewed

    Satoshi Miyashita, Kenji Yonemitsu

    PHYSICAL REVIEW B   75 ( 24 )   245112 (6 pages)   2007.6

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    DOI: 10.1103/PhysRevB.75.245112

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  • Effects of electron-lattice coupling on charge order in θ-(ET) 2X Reviewed

    Yasuhiro Tanaka, Kenji Yonemitsu

    Journal of the Physical Society of Japan   76 ( 5 )   053708 (5 pages)   2007.5

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    DOI: 10.1143/JPSJ.76.053708

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  • Possibility of field-induced incommensurate order in a quasi-one-dimensional frustrated spin system Reviewed

    N Maeshima, K Okunishi, K Okamoto, T Sakai, K Yonemitsu

    JOURNAL OF PHYSICS-CONDENSED MATTER   18 ( 20 )   4819 - 4826   2006.5

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    DOI: 10.1088/0953-8984/18/20/006

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  • Phase diagram of the excitonic insulator Reviewed

    B Hulsen, FX Bronold, H Fehske, K Yonemitsu

    PHYSICA B-CONDENSED MATTER   378-80   267 - 268   2006.5

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    DOI: 10.1016/j.physb.2006.01.099

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  • Interchain coupling effects on photoinduced phase transitions between neutral and ionic phases in an extended Hubbard model with alternating potentials and an electron-lattice coupling Reviewed

    K Yonemitsu

    PHYSICAL REVIEW B   73 ( 15 )   155120 (7 pages)   2006.4

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    DOI: 10.1103/PhysRevB.73.155120

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  • Interchain-coupling effects on photoinduced neutral-ionic transition dynamics in mixed-stack charge-transfer complexes Reviewed

    K. Yonemitsu

    JOURNAL OF LOW TEMPERATURE PHYSICS   142 ( 3-4 )   499 - 502   2006.2

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    DOI: 10.1007/s10909-006-9150-7

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  • Theory of photoinduced phase transitions Reviewed

    K Yonemitsu, K Nasu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   75 ( 1 )   011008 (8 pages)   2006.1

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    DOI: 10.1143/JPSJ.75.011008

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  • Dynamics of photoexcited states in one-dimensional dimerized Mott insulators Reviewed

    Nobuya Maeshima, Kenji Yonemitsu

    Physical Review B - Condensed Matter and Materials Physics   74 ( 15 )   155105 (11 pages)   2006

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  • Photoinduced metallic properties of one-dimensional strongly correlated electron systems Reviewed

    N Maeshima, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   74 ( 10 )   2671 - 2674   2005.10

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    DOI: 10.1143/JPSJ.74.2671

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  • Inter-chain Coulomb-lattice relaxation and multicriticality in charge transfer organic complexes Reviewed

    J Kishine, T Ohara, T Luty, K Yonemitsu

    SYNTHETIC METALS   154 ( 1-3 )   257 - 260   2005.9

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    DOI: 10.1016/j.synthmet.2005.07.066

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  • Mechanism of ambipolar field-effect carrier injections in one-dimensional Mott insulators Reviewed

    K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   74 ( 9 )   2544 - 2553   2005.9

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  • Theory of photoinduced phase dynamics in organic charge-transfer complexes Reviewed

    K Yonemitsu

    JOURNAL OF LUMINESCENCE   112 ( 1-4 )   279 - 282   2005.4

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    DOI: 10.1016/j.jlumin.2004.09.047

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  • Field-Induced Phase Transitions and Long-Range Orders in the S=1/2 Spin Bond-Alternating Chain with Frustrating Interaction Reviewed

    Nobuya Maeshima, Kouichi Okunishi, Kiyomi Okamoto, Toru Sakai, Kenji Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   74   63 - 66   2005

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  • Photoinduced dynamics and nonequilibrium characteristics in quasi-one-dimensional electron systems: Mott insulators vs. band insulators Reviewed

    K Yonemitsu

    Second International Conference on Photo-Induced Phase Transitions: Cooperative, Nonlinear and Functional Properties   21   30 - 37   2005

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    DOI: 10.1088/1742-6596/21/1/005

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  • Optical responses of photoexcited states in the one-dimensional ionic Hubbard model Reviewed

    N Maeshima, K Yonemitsu

    SECOND INTERNATIONAL CONFERENCE ON PHOTO-INDUCED PHASE TRANSITIONS: COOPERATIVE, NONLINEAR AND FUNCTIONAL PROPERTIES   21   183 - 188   2005

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    DOI: 10.1088/1742-6596/21/1/030

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  • Quantum Ising model coupled with conducting electrons Reviewed

    Y Yamashita, K Yonemitsu

    Second International Conference on Photo-Induced Phase Transitions: Cooperative, Nonlinear and Functional Properties   21   232 - 236   2005

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    DOI: 10.1088/1742-6596/21/1/039

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  • Phase transition in a one-dimensional extended Peierls-Hubbard model with a pulse of oscillating electric field: I. Threshold behavior in ionic-to-neutral transition Reviewed

    K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   73 ( 10 )   2868 - 2878   2004.10

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  • Phase transition in a one-dimensional extended Peierls-Hubbard model with a pulse of oscillating electric field: II. Linear behavior in neutral-to-ionic transition Reviewed

    K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   73 ( 10 )   2879 - 2886   2004.10

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    DOI: 10.1143/JPSJ.73.2879

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  • Phase transition in a one-dimensional extended Peierls-Hubbard model with a pulse of oscillating electric field: III. Interference caused by a double pulse Reviewed

    K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   73 ( 10 )   2887 - 2893   2004.10

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    DOI: 10.1143/JPSJ.73.2887

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  • On thermo- and photo-induced symmetry-broken transformation in spin-crossover complex: Cooperative activation Reviewed

    T Luty, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   73 ( 5 )   1237 - 1243   2004.5

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    DOI: 10.1143/JPSJ.73.1237

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  • Two-step photo-induced phase transitions in a two-sublattice model Reviewed

    Y Otsuka, K Yonemitsu

    JOURNAL DE PHYSIQUE IV   114   637 - 639   2004.4

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    DOI: 10.1051/jp4:2004114152

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  • Ferroelectric phase transition, ionicity condensation, and multicriticality in charge-transfer organic complexes Reviewed

    J Kishine, T Luty, K Yonemitsu

    PHYSICAL REVIEW B   69 ( 7 )   075115 (5 pages)   2004.2

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    DOI: 10.1103/PhysRevB.69.075115

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  • Electronic and lattice dynamics in the photoinduced ionic-to-neutral phase transition in a one-dimensional extended Peierls-Hubbard model Reviewed

    N Miyashita, M Kuwabara, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   72 ( 9 )   2282 - 2290   2003.9

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    DOI: 10.1143/JPSJ.72.2282

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  • Coherence recovery and photoinduced phase transitions in one-dimensional halogen-bridged binuclear platinum complexes Reviewed

    K Yonemitsu, N Miyashita

    PHYSICAL REVIEW B   68 ( 7 )   075113 (9 pages)   2003.8

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  • Dynamic spin correlations near neutral-ionic phase transitions Reviewed

    K Yonemitsu

    PHYSICA B-CONDENSED MATTER   329   1219 - 1220   2003.5

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    DOI: 10.1016/S0921-4526(02)02142-7

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  • Photoinduced dynamics of ionicity near the neutral-ionic phase boundary in a one-dimensional extended Peierls-Hubbard model Reviewed

    N Miyashita, M Kuwabara, K Yonemitsu

    SYNTHETIC METALS   135 ( 1-3 )   645 - 646   2003.4

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    DOI: 10.1016/S0379-6779(02)00759-2

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  • Photoexcited states and photoinduced dynamics in electronic phases of MMX-chain systems Reviewed

    K Yonemitsu, N Miyashita, M Kuwabara

    SYNTHETIC METALS   135 ( 1-3 )   521 - 522   2003.4

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  • Self-doping effect on the Mott transition accompanied with threefold charge ordering in (DCNQI)(2)Cu Reviewed

    M Kuwabara, K Yonemitsu, H Ohta

    SYNTHETIC METALS   133   295 - 297   2003.3

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    DOI: 10.1016/S0379-6779(02)00315-6

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  • Correlation-induced dimensional crossovers of charge-transfer excitations in quasi-one-dimensional organic conductors Reviewed

    K Yonemitsu

    SYNTHETIC METALS   133   7 - 9   2003.3

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  • Domain-wall dynamics after photoexcitations near neutral-ionic phase transitions Reviewed

    N Miyashita, M Kuwabara, K Yonemitsu

    PHASE TRANSITIONS   75 ( 7-8 )   887 - 893   2002.10

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  • Variation of excitation spectra in mixed-stack charge-transfer complexes Reviewed

    K Yonemitsu

    PHASE TRANSITIONS   75 ( 7-8 )   759 - 767   2002.10

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    DOI: 10.1080/01411590290033877

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  • Collective excitations and confinement in the excitation spectra of the spinless fermion model on a ladder Reviewed

    K Yonemitsu

    PHYSICAL REVIEW B   66 ( 3 )   035121 (10 pages)   2002.7

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  • Finite-temperature phase diagram of mixed-stack charge-transfer complexes Reviewed

    K Yonemitsu

    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS   63 ( 6-8 )   1495 - 1499   2002.6

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    DOI: 10.1016/S0022-3697(02)00043-4

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  • Lattice and magnetic instabilities near the neutral-ionic phase transition of the one-dimensional extended Hubbard model with alternating potentials in the thermodynamic limit Reviewed

    K Yonemitsu

    PHYSICAL REVIEW B   65 ( 20 )   205105 (8 pages)   2002.5

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  • Dimensional crossovers and phase transitions in strongly correlated low-dimensional electron systems: Renormalization-group study Reviewed

    JI Kishine, K Yonemitsu

    INTERNATIONAL JOURNAL OF MODERN PHYSICS B   16 ( 5 )   711 - 771   2002.2

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    DOI: 10.1142/S0217979202009962

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  • Quantum and thermal charge-transfer fluctuations for neutral-ionic phase transitions in the one-dimensional extended Hubbard model with alternating potentials Reviewed

    K Yonemitsu

    PHYSICAL REVIEW B   65 ( 8 )   085105 (7 pages)   2002.2

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  • Charge ordering patterns and their excitation spectra in two-dimensional charge-transfer compounds Reviewed

    M Mori, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   380   209 - 213   2002

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  • Optical conductivity for possible ground states of dimerized two-band Pd(dmit)(2) salts Reviewed

    M Mori, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   376   141 - 146   2002

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    DOI: 10.1080/10587250210769

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  • Optical excitations in XMMX monomers and MMX chains Reviewed

    M Kuwabara, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   376   251 - 256   2002

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    DOI: 10.1080/10587250210802

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  • Spin solitons in the alternate charge polarization background of MMX chains Reviewed

    M Kuwabara, K Yonemitsu, H Ohta

    EPR IN THE 21ST CENTURY: BASICS AND APPLICATIONS TO MATERIAL, LIFE AND EARTH SCIENCES   59 - 62   2002

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  • Intra- and inter-chain excitations near a quantum phase transition in quasi-one-dimensional conductors Reviewed

    K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   376   53 - 58   2002

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    DOI: 10.1080/10587250210787

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  • Strong commensurability effect on metal-insulator transition in (DCNQI)(2)Cu Reviewed

    M Kuwabara, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   380   257 - 261   2002

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    DOI: 10.1080/10587250290101973

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  • Variation mechanisms of ground-state and optical-excitation properties in quasi-one-dimensional two-band electron systems Reviewed

    K Yonemitsu, M Kuwabara, N Miyashita

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   379   467 - 474   2002

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    DOI: 10.1080/10587250290090903

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  • Photoinduced phenomenon in polymers Reviewed

    Sun, X, RL Fu, K Yonemitsu, K Nasu

    PHYSICAL REVIEW A   64 ( 3 )   032504 (7 pages)   2001.9

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    DOI: 10.1103/PhysRevA.64.032504

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  • Two-loop renormalization of the quasiparticle weight in two-dimensional electron systems Reviewed

    Jun-Ichiro Kishine, Nobuo Furukawa, Kenji Yonemitsu

    International Journal of Modern Physics B   15 ( 10-11 )   1381 - 1384   2001.5

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    DOI: 10.1142/S0217979201005878

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  • Charge excitations in an alternate charge polarization phase of a one-dimensional two-band extended Peierls-Hubbard model for MMX chains Reviewed

    M Kuwabara, K Yonemitsu

    SYNTHETIC METALS   120 ( 1-3 )   947 - 948   2001.3

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    DOI: 10.1016/S0379-6779(00)01196-6

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  • Intra- and inter-chain dynamic response functions in quasi-one-dimensional conductors Reviewed

    K Yonemitsu

    SYNTHETIC METALS   120 ( 1-3 )   845 - 846   2001.3

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    DOI: 10.1016/S0379-6779(00)00681-0

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  • Stability and cation dependence of magnetic orders in (Et(n)Me(4-n)Z)[Pd(dmit)(2)](2) Reviewed

    M Mori, K Yonemitsu

    SYNTHETIC METALS   120 ( 1-3 )   945 - 946   2001.3

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    DOI: 10.1016/S0379-6779(00)01476-4

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  • Charge ordering and lattice modulation in MMX chains Reviewed

    M Kuwabara, K Yonemitsu

    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS   62 ( 1-2 )   435 - 438   2001.1

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    DOI: 10.1016/S0022-3697(00)00183-9

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  • Charge gap and dimensional crossovers in quasi-one-dimensional organic conductors Reviewed

    K Yonemitsu, J Kishine

    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS   62 ( 1-2 )   99 - 104   2001.1

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    DOI: 10.1016/S0022-3697(00)00108-6

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  • Anisotropic collective excitations around various charge ordering states Reviewed

    M Mori, K Yonemitsu

    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS   62 ( 1-2 )   409 - 411   2001.1

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    DOI: 10.1016/S0022-3697(00)00177-3

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  • Ground state phases and optical properties in extended Peierls-Hubbard models for halogen-bridged binuclear metal complexes Reviewed

    M Kuwabara, K Yonemitsu

    JOURNAL OF MATERIALS CHEMISTRY   11 ( 9 )   2163 - 2175   2001

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  • Charge ordering and optical conductivity of MMX chains Reviewed

    M Kuwabara, K Yonemitsu

    PHYSICS IN LOCAL LATTICE DISTORTIONS: FUNDAMENTALS AND NOVEL CONCEPTS LLD2K   554   465 - 469   2001

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  • Interplay of randomness, electron correlation, and dimensionality effects in quasi-one-dimensional conductors Reviewed

    J. Kishine, K. Yonemitsu

    Physical Review B - Condensed Matter and Materials Physics   62 ( 20 )   13323 - 13337   2000.11

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    DOI: 10.1103/PhysRevB.62.13323

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  • Dimensionality effects on the charge gap in the dimerized Hubbard model at quarter filling: The density-matrix and perturbative renormalization-group approaches Reviewed

    K Yonemitsu, J Kishine

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   69 ( 7 )   2107 - 2112   2000.7

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    DOI: 10.1143/JPSJ.69.2107

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  • Magnetic property of MMX chains as dimerized quarter-filled systems Reviewed

    M Kuwabara, K Yonemitsu

    PHYSICA B   284   1545 - 1546   2000.7

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  • Dimensionality effects in half-filled random Hubbard chains Reviewed

    J Kishine, K Yonemitsu

    PHYSICA B   284   1946 - 1947   2000.7

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    DOI: 10.1016/S0921-4526(99)03065-3

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  • Effects of dimerization on spin, charge and hopping correlation functions in quasi-one-dimensional organic conductors Reviewed

    K Yonemitsu

    PHYSICA B   284 ( Pt.1 )   515 - 516   2000.7

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    DOI: 10.1016/S0921-4526(99)02114-6

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  • Possible ground-state phases of Pd(dmit)(2) salts Reviewed

    M Mori, K Yonemitsu, H Kino

    PHYSICA B   284   1495 - 1496   2000.7

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  • Photoinduced polarization inversion in a polymeric molecule Reviewed

    Sun, X, RL Fu, K Yonemitsu, K Nasu

    PHYSICAL REVIEW LETTERS   84 ( 13 )   2830 - 2832   2000.3

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    DOI: 10.1103/PhysRevLett.84.2830

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  • Role of dimensionality in dimerized two-band systems Reviewed

    M Mori, K Yonemitsu, H Kino

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   341   1353 - 1358   2000

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  • Numerical studies of ground state phase diagrams for the MMX chains Reviewed

    M Kuwabara, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   341   1337 - 1342   2000

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  • Charge gap and interchain correlation in quasi-one-dimensional dimerized organic conductors Reviewed

    K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   341   1347 - 1352   2000

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  • Interplay of correlation, randomness and dimensionality effects in weakly-coupled half-filled random Hubbard chains Reviewed

    Jun-Ichiro Kishine, Kenji Yonemitsu

    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals   341   555 - 560   2000

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    DOI: 10.1080/10587250008026198

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  • Charge ordering and lattice modulation in quasi-one-dimensional halogen-bridged binuclear metal complexes Reviewed

    M Kuwabara, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   343   365 - 370   2000

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  • Collective excitations around charge ordered states and coexistent states with different orders Reviewed

    M Mori, K Yonemitsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   343   539 - 544   2000

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  • Phase transitions from incoherent and from coherent metal phases in quasi-one-dimensional organic conductors Reviewed

    J Kishine, K Yonemitsu

    JOURNAL OF LOW TEMPERATURE PHYSICS   117 ( 5-6 )   1741 - 1745   1999.12

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    DOI: 10.1023/A:1022504925213

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  • Magnetic and pairing correlation functions and interchain coherence in quasi-one-Dimensional dimerized organic conductors Reviewed

    K Yonemitsu

    JOURNAL OF LOW TEMPERATURE PHYSICS   117 ( 5-6 )   1765 - 1769   1999.12

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    DOI: 10.1023/A:1022513127030

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  • Quasi-one-dimensional natures in (Et(n)Me(4-n)Z) [Pd(dmit)(2)](2) Reviewed

    M Mori, K Yonemitsu, H Kino

    JOURNAL OF LOW TEMPERATURE PHYSICS   117 ( 5-6 )   1723 - 1727   1999.12

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    DOI: 10.1023/A:1022548707466

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  • Structures and electronic phases of the bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) clusters and kappa-(BEDT-TTF) salts: A theoretical study based on ab initio molecular orbital methods Reviewed

    Y Imamura, S Ten-no, K Yonemitsu, Y Tanimura

    JOURNAL OF CHEMICAL PHYSICS   111 ( 13 )   5986 - 5994   1999.10

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    DOI: 10.1063/1.479894

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  • Spin-density-wave phase transitions in quasi-one-dimensional dimerized quarter-filled organic conductors Reviewed

    J Kishine, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   68 ( 8 )   2790 - 2801   1999.8

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    DOI: 10.1143/JPSJ.68.2790

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  • Electric-field response of exciton in electroluminescent polymer Reviewed

    L Li, RL Fu, Sun, X, K Yonemitsu

    PHYSICA STATUS SOLIDI B-BASIC RESEARCH   214 ( 2 )   337 - 342   1999.8

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    DOI: 10.1002/(SICI)1521-3951(199908)214:2<337::AID-PSSB337>3.0.CO;2-H

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  • Effects of dimerization and interchain one-particle hopping in a weakly coupled dimerized chain system at quarter filling Reviewed

    J Kishine, K Yonemitsu

    SYNTHETIC METALS   103 ( 1-3 )   1833 - 1834   1999.6

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    DOI: 10.1016/S0379-6779(98)00486-X

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  • A correlated-basis-function study of SDW in polymers Reviewed

    XH Xu, RT Fu, Sun, X, K Yonemitsu

    SYNTHETIC METALS   103 ( 1-3 )   2337 - 2338   1999.6

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    DOI: 10.1016/S0379-6779(98)00654-7

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  • Geometry, universality and dimensional crossovers in weakly coupled one-dimensional conductors Reviewed

    J Kishine, K Yonemitsu

    SYNTHETIC METALS   103 ( 1-3 )   2650 - 2650   1999.6

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    DOI: 10.1016/S0379-6779(98)00665-1

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  • Anisotropic renormalization-group flow of quasiparticle weight in a two-dimensional electron system with a partially flat Fermi surface Reviewed

    J Kishine, K Yonemitsu

    PHYSICAL REVIEW B   59 ( 23 )   14823 - 14826   1999.6

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    DOI: 10.1103/PhysRevB.59.14823

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  • Renormalization-group study of competition between density waves and pairing in quasi-one-dimensional electron systems Reviewed

    K Yonemitsu

    SYNTHETIC METALS   103 ( 1-3 )   2216 - 2217   1999.6

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    DOI: 10.1016/S0379-6779(98)00935-7

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  • Coexistence of SDW and purely-electronic CDW in quarter-filled organic conductors Reviewed

    M Ogata, N Kobayashi, K Yonemitsu

    SYNTHETIC METALS   103 ( 1-3 )   2242 - 2243   1999.6

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    DOI: 10.1016/S0379-6779(98)00567-0

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  • Possible magnetic phases in two-band systems with different dimensionality Reviewed

    M Mori, K Yonemitsu, H Kino

    SYNTHETIC METALS   103 ( 1-3 )   1883 - 1884   1999.6

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    DOI: 10.1016/S0379-6779(98)00585-2

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  • Conductivity and magnetic properties of one-dimensional Heisenberg-Kondo lattice Reviewed

    T Ogawa, K Yonemitsu

    SYNTHETIC METALS   103 ( 1-3 )   2149 - 2150   1999.6

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    DOI: 10.1016/S0379-6779(99)80004-6

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  • Berry phases and pairing symmetry in Holstein-Hubbard polaron systems Reviewed

    K Yonemitsu, J Zhong, HB Schuttler

    PHYSICAL REVIEW B   59 ( 2 )   1444 - 1467   1999.1

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    DOI: 10.1103/PhysRevB.59.1444

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  • Localized vibrational modes of excitation in electroluminescent polymers Reviewed

    H Jiang, XH Xu, Sun, X, K Yonemitsu

    CHINESE PHYSICS LETTERS   16 ( 11 )   836 - 837   1999

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    DOI: 10.1088/0256-307X/16/11/021

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  • Theoretical study on electron correlation of 1-D (DCNQI)(2)M (M = Li, Ag) salts Reviewed

    Y Imamura, S Ten-no, K Yonemitsu, Y Tanimura

    CHEMICAL PHYSICS LETTERS   298 ( 1-3 )   15 - 20   1998.12

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    DOI: 10.1016/S0009-2614(98)01212-3

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  • Off-diagonal interactions and spin-density waves in polymers Reviewed

    XH Xu, RT Fu, K Hu, Sun, X, K Yonemitsu

    PHYSICAL REVIEW B   58 ( 14 )   9039 - 9046   1998.10

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    DOI: 10.1103/PhysRevB.58.9039

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  • Antiferromagnetic phase transition and crossover to Fermi liquid phase in a weakly coupled half-filled chain system Reviewed

    J Kishine, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   67 ( 8 )   2590 - 2593   1998.8

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    DOI: 10.1143/JPSJ.67.2590

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  • Dimensional crossovers in the doped ladder system: Spill gap, superconductivity and interladder coherent band motion Reviewed

    J Kishine, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   67 ( 5 )   1714 - 1731   1998.5

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    DOI: 10.1143/JPSJ.67.1714

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  • Coexistence of SDW and purely-electronic CDW in quarter-filled organic conductors Reviewed

    N Kobayashi, M Ogata, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   67 ( 4 )   1098 - 1101   1998.4

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  • Effect of electron correlation on competition between BOW and SDW in polymer Reviewed

    Sun, X, XH Xu, K Hu, K Yonemitsu

    PHYSICS LETTERS A   239 ( 3 )   191 - 195   1998.3

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    DOI: 10.1016/S0375-9601(97)00928-6

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  • Superconductivity and Magnetism in Quasi-One-Dimensional Two-Band Systems Reviewed

    K. Yonemitsu, J. Kishine, T. Ogawa

    Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu   7   490 - 492   1998

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    DOI: 10.4131/jshpreview.7.490

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  • On the Effects of On-Site Coulomb Interaction in Strongly Dimerized Two Band Systems

    H. Kino, T. Miyazaki, M. Mori, K. Yonemitsu

    Proceedings of the JRCAT Conference   1998

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  • Spin gap and superconductivity in weakly coupled ladders: Interladder one-particle vs. two-particle crossover Reviewed

    J Kishine, K Yonemitsu

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   66 ( 12 )   3725 - 3728   1997.12

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    DOI: 10.1143/JPSJ.66.3725

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  • Renormalization-group approach to the metal-insulator transitions in (DCNQI)(2)M (DCNQI is N,N&apos;-dicyanoquinonediimine and M=Ag, Cu) Reviewed

    K Yonemitsu

    PHYSICAL REVIEW B   56 ( 12 )   7262 - 7276   1997.9

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    DOI: 10.1103/PhysRevB.56.7262

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  • Phonon effects on superconducting phase in two-chain electron systems Reviewed

    K Yonemitsu

    PHYSICA C   282 ( Pt.2 )   1109 - 1110   1997.8

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    DOI: 10.1016/S0921-4534(97)90663-8

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  • Quasi-particle band structure and gapless superconductivity in the vortex-lattice state Reviewed

    T Nishio, K Yonemitsu, H Ebisawa

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   66 ( 4 )   953 - 956   1997.4

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  • Mott transition in quasi-one-dimensional electron systems of quarter filling Reviewed

    K. Yonemitsu

    Synthetic Metals   85 ( 1/3 )   1635 - 1636   1997.3

  • Various Transitions in Quasi-One-Dimensional Systems under High Pressure

    K. Yonemitsu, J. Kishine, T. Ogawa

    Special Issue of The Review of High Pressure Science and Technology   6   360   1997

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  • Electron-phonon interaction and spin gap in nearly-half-filled correlated electron systems Reviewed

    K. Yonemitsu, M. Imada

    Physica C: Superconductivity and its Applications   263 ( 1-4 )   82 - 85   1996.5

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    DOI: 10.1016/0921-4534(95)00715-6

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  • Spin gap in one-dimensional electron-phonon systems Reviewed

    Kenji Yonemitsu, Masatoshi Imada

    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals   285-286   223 - 228   1996

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    DOI: 10.1080/10587259608030805

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  • Spin-gap phase in nearly half-filled one-dimensional conductors coupled with phonons Reviewed

    K. Yonemitsu, M. Imada

    Physical Review B - Condensed Matter and Materials Physics   54 ( 4 )   2410 - 2420   1996

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    DOI: 10.1103/PhysRevB.54.2410

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  • BERRY PHASES, PAIRING SYMMETRY, AND NODELESS D-WAVE STATES IN A STRONGLY CORRELATED POLARON MODEL Reviewed

    HB SCHUTTLER, K YONEMITSU, J ZHONG

    JOURNAL OF SUPERCONDUCTIVITY   8 ( 5 )   555 - 558   1995.10

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    DOI: 10.1007/BF00727424

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  • CONTINUUM-LIMIT OF THE FLUCTUATION FACTOR IN COHERENT-STATE FUNCTIONAL-INTEGRALS FOR TRANSITION AMPLITUDES Reviewed

    K YONEMITSU

    PHYSICAL REVIEW A   50 ( 6 )   5324 - 5327   1994.12

  • Time-dependent mean-field theory for tunneling in electron-phonon systems Reviewed

    K. Yonemitsu

    Physical Review B   50 ( 5 )   2899 - 2920   1994.8

  • INSTABILITY OF VORTEX TEXTURES IN THE 2-DIMENSIONAL HUBBARD-MODEL Reviewed

    K YONEMITSU, AR BISHOP

    PHYSICAL REVIEW B   48 ( 9 )   6680 - 6682   1993.9

  • OPTICAL-EXCITATIONS ALONG CUO CHAINS IN COPPER OXIDES Reviewed

    K YONEMITSU, AR BISHOP

    PHYSICAL REVIEW B   48 ( 5 )   3349 - 3355   1993.8

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    DOI: 10.1103/PhysRevB.48.3349

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  • DYNAMIC AND STATIC CORRELATION-FUNCTIONS IN THE INHOMOGENEOUS-HARTREE-FOCK-STATE APPROACH WITH RANDOM-PHASE-APPROXIMATION FLUCTUATIONS Reviewed

    J LORENZANA, MD GRYNBERG, L YU, K YONEMITSU, AR BISHOP

    PHYSICAL REVIEW B   47 ( 20 )   13156 - 13163   1993.5

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    DOI: 10.1103/PhysRevB.47.13156

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  • DOPING STATES IN THE 2-DIMENSIONAL 3-BAND PEIERLS-HUBBARD MODEL Reviewed

    K YONEMITSU, AR BISHOP, J LORENZANA

    PHYSICAL REVIEW B   47 ( 18 )   12059 - 12088   1993.5

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    DOI: 10.1103/PhysRevB.47.12059

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  • ELECTRON-PHONON DRIVEN SPIN FRUSTRATION IN MULTIBAND HUBBARD MODELS - MX CHAINS AND OXIDE SUPERCONDUCTORS Reviewed

    JT GAMMEL, K YONEMITSU, A SAXENA, AR BISHOP, H RODER

    SYNTHETIC METALS   56 ( 2-3 )   3377 - 3382   1993.4

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  • MAGNETISM AND COVALENCY IN THE 2-DIMENSIONAL 3-BAND PEIERLS-HUBBARD MODEL Reviewed

    K YONEMITSU, AR BISHOP, J LORENZANA

    PHYSICAL REVIEW B   47 ( 13 )   8065 - 8075   1993.4

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    DOI: 10.1103/PhysRevB.47.8065

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  • Linear Excitations around Broken-Symmetry Mean-Field States: Doping States in the Copper Oxides Reviewed

    K. Yonemitsu, A. R. Bishop, J. Lorenzana

    Modern Physics Letters B   7 ( 6 )   355 - 377   1993.3

  • VIBRONIC, OPTICAL, AND MAGNETIC EXCITATIONS AROUND SOLITONS IN A ONE-DIMENSIONAL 2-BAND PEIERLS-HUBBARD MODEL Reviewed

    K YONEMITSU, AR BISHOP

    PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT   ( 113 )   155 - 165   1993

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  • SENSITIVITY OF DOPING STATES IN THE COPPER OXIDES TO ELECTRON-LATTICE COUPLING Reviewed

    K YONEMITSU, AR BISHOP, J LORENZANA

    PHYSICAL REVIEW LETTERS   69 ( 6 )   965 - 968   1992.8

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    DOI: 10.1103/PhysRevLett.69.965

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  • RANDOM-PHASE-APPROXIMATION APPROACH TO OPTICAL AND MAGNETIC EXCITATIONS IN THE 2-DIMENSIONAL MULTIBAND HUBBARD-MODEL Reviewed

    K YONEMITSU, AR BISHOP

    PHYSICAL REVIEW B   45 ( 10 )   5530 - 5534   1992.3

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    DOI: 10.1103/PhysRevB.45.5530

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  • RANDOM-PHASE-APPROXIMATION APPROACH TO COLLECTIVE MODES AROUND INHOMOGENEOUS HARTREE-FOCK STATES - ONE-DIMENSIONAL DOPED HUBBARD-MODEL Reviewed

    K YONEMITSU, BATISTIC, I, AR BISHOP

    PHYSICAL REVIEW B   44 ( 6 )   2652 - 2663   1991.8

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    DOI: 10.1103/PhysRevB.44.2652

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  • SPIN FLUCTUATIONS AND SUPERCONDUCTIVITY IN 2-DIMENSIONAL CUO2 SYSTEM Reviewed

    K YONEMITSU

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   59 ( 6 )   2183 - 2204   1990.6

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    DOI: 10.1143/JPSJ.59.2183

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  • VERTEX CORRECTION TO RPA AND SUPERCONDUCTIVITY IN THE 2-DIMENSIONAL HUBBARD-MODEL Reviewed

    K YONEMITSU

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   58 ( 12 )   4576 - 4599   1989.12

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    DOI: 10.1143/JPSJ.58.4576

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  • ANISOTROPY IN ELECTRON-PHONON INTERACTIONS AND SUPERCONDUCTING TRANSITION IN A TWO-DIMENSIONAL SYSTEM Reviewed

    K YONEMITSU, Y WADA

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   58 ( 9 )   3304 - 3323   1989.9

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    DOI: 10.1143/JPSJ.58.3304

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  • CORRELATION-EFFECTS ON THE SPIN SOLITON IN POLYACETYLENE Reviewed

    K YONEMITSU, Y ONO, Y WADA

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   57 ( 11 )   3875 - 3886   1988.11

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    DOI: 10.1143/JPSJ.57.3875

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  • CORRELATION-EFFECTS ON THE PHONONS LOCALIZED AROUND A SOLITON OR A POLARON IN POLYACETYLENE Reviewed

    K YONEMITSU, Y ONO, Y WADA

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   56 ( 12 )   4400 - 4407   1987.12

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    DOI: 10.1143/JPSJ.56.4400

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▼display all

Books

  • Light-induced mirror symmetry breaking and charge transport

    Naoya Arakawa, Kenji Yonemitsu( Role: Joint author)

    Solid State Physics, Vol. 60, No. 5, 269-278  2025.5 

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  • Handbook of Quantum Light-Matter Interactions

    ( Role: Contributor)

    2023.3  ( ISBN:9784860438265

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    Total pages:3, 8, 933, 13p, 図版31p   Language:Japanese  

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  • Opto-magneto effect and ultrafast charge dynamics in α-RuCl3

    T. Amano, Y. Kawakami, H. Itoh, S. Iwai, K. Yonemitsu

    Solid State Physics, Vol. 57, No. 11, 667-679  2022.11 

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  • Petahertz Current Control by Nearly Single-Cycle Light Pulse in an Organic Superconductor

    S. Iwai, Y. Kawakami, H. Itoh, K. Yonemitsu

    The Review of Laser Engineering, Vol. 50, No. 6, 313-317 (2022).  2022.6 

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  • Petahertz Correlated Electron Dynamics in an Organic Superconductor

    S. Iwai, Y. Kawakami, H. Itoh, K. Yonemitsu

    2022.5 

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  • Spontaneous Formation of Correlated Charge Coherence Induced by 1.5-Cycle Pulse in 1-D Organic Metal (TMTTF)$_2$AsF$_6$

    T. Ishikawa, Y. Sagae, Y. Naito, J. Ichimura, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, S. Ishihara, T. Sasaki, K. Yonemitsu, S. Iwai

    Ultrafast Phenomena XIX, edited by K. Yamanouchi, S. Cundiff, R. de Vivie-Riedle, M. Kuwata-Gonokami, L. DiMauro (Springer Proceedings in Physics, Vol. 162) pp. 244-247  2015.1 

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  • 光誘起電荷秩序融解のしくみ

    米満 賢治

    パリティ, Vol. 29, No. 07, 55-59  2014.7 

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  • Theory of MMX-Chain Compounds

    K. Yonemitsu

    Material Designs and New Physical Properties in MX- and MMX-Chain Compounds, edited by M. Yamashita and H. Okamoto (Springer-Verlag, Wien) pp.243-264  2013.1 

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  • 相関電子系を有する分子性結晶の光誘起相転移―理論的アプローチ―

    米満 賢治

    固体物理, Vol. 48, No. 1, 1-12  2013.1 

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  • Theory of photoinduced phase transitions in quasi-one-dimensional organic conductors

    Molecular Electronic and Related Materials -- Control and Probe with Light, edited by T. Naito (Research Signpost/Transworld Research Network, Trivandrum, India) 305-320  2010  ( ISBN:9788178954608

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  • Theory of photoinduced phase transitions in quasi-one-dimensional organic conductors

    K. Yonemitsu

    Molecular Electronic and Related Materials -- Control and Probe with Light, edited by T. Naito (Research Signpost/Transworld Research Network, Trivandrum, India) 305-320  2010  ( ISBN:9788178954608

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  • 理論が解き明かす光誘起相転移

    Chemistry & Chemical Industry, Vol. 62, No. 8, 892-894  2009 

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  • 理論が解き明かす光誘起相転移

    米満賢治

    化学と工業, Vol. 62, No. 8, 892-894  2009 

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  • Theory of Photoinduced Phase Transitions: Coherent Oscillations and Transient States

    The Review of Laser Engineering (in Japanese), Vol. 36, No.6, 343-348  2008 

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  • 光誘起相転移の理論-コヒーレント振動と過渡状態-

    米満賢治

    レーザー研究, Vol. 36, No.6, 343-348  2008 

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  • Theory of Optical Responses of Photoexcited Halogen-Bridged Metal Complexes in Different Insulating Phases (共著)

    Multifunctional Conducting Molecular Materials, edited by G. Saito, F. Wudl, R. C. Haddon, K. Tanigaki, T. Enoki, H. E. Katz and M. Maesato (RSC Publishing, Cambridge)  2007 

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  • 光で電子を一斉に動かし物性を変えるしくみの理論

    米満賢治

    光アライアンス, Vol. 18, No.7, 29-33  2007 

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  • Mechanism of Ambipolar Field-Effect Transistors on One-Dimensional Organic Mott Insulators

    K. Yonemitsu

    Multifunctional Conducting Molecular Materials, edited by G. Saito, F. Wudl, R. C. Haddon, K. Tanigaki, T. Enoki, H. E. Katz and M. Maesato (RSC Publishing, Cambridge)  2007 

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  • Theory of Optical Responses of Photoexcited Halogen-Bridged Metal Complexes in Different Insulating Phases

    N. Maeshima, K. Yonemitsu

    Multifunctional Conducting Molecular Materials, edited by G. Saito, F. Wudl, R. C. Haddon, K. Tanigaki, T. Enoki, H. E. Katz and M. Maesato (RSC Publishing, Cambridge)  2007 

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  • Theory about Mechanism of Transferring Many Electrons at Once and Changing Material Properties by Photoexcitations

    Optical Alliance (in Japanese), 18, 29-33  2007 

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  • Mechanism of Ambipolar Field-Effect Transistors on One-Dimensional Organic Mott Insulators

    Multifunctional Conducting Molecular Materials, edited by G. Saito, F. Wudl, R. C. Haddon, K. Tanigaki, T. Enoki, H. E. Katz and M. Maesato (RSC Publishing, Cambridge)  2007 

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  • Theory of optical phase control in charge-transfer complexes

    Proceeding of International Conference on Science and Technology of Synthetic Metals (ICSM2004), University of Wollongong, Intelligent Polymer Research Institute, Australia  2004 

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  • Theory of optical phase control in charge-transfer complexes

    K. Yonemitsu

    Proceeding of International Conference on Science and Technology of Synthetic Metals (ICSM2004), University of Wollongong, Intelligent Polymer Research Institute, Australia  2004 

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  • Inter-chain electrostriction and pressure-induced multicriticality in charge transfer organic complexes (共著)

    Proceeding of International Conference on Science and Technology of Synthetic Metals (ICSM2004), University of Wollongong, Intelligent Polymer Research Institute, Australia  2004 

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  • Inter-chain electrostriction and pressure-induced multicriticality in charge transfer organic complexes

    J. Kishine, T. Luty, K. Yonemitsu

    Proceeding of International Conference on Science and Technology of Synthetic Metals (ICSM2004), University of Wollongong, Intelligent Polymer Research Institute, Australia  2004 

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  • 低次元金属錯体の多様な電子物性の起源

    米満賢治

    「集積型金属錯体の科学」(化学同人)Ⅱ部 12章  2003 

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  • 低次元金属錯体の多様な電子物性の起源

    「集積型金属錯体の科学」(化学同人)Ⅱ部 12章  2003 

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  • Spin Solitons in the Alternate Charge Polarization Background of MMX Chains

    M. Kuwabara, K. Yonemitsu, H. Ohta

    EPR in the 21st Century, edited by Kawamori, J. Yamauchi and H. Ohta  2002 

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  • Spin Solitons in the Alternate Charge Polarization Background of MMX Chains (共著)

    EPR in the 21st Century, edited by Kawamori, J. Yamauchi and H. Ohta  2002 

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  • Two-loop renormalization of the quasiparticle weight in two-dimensional electron systems (共著)

    International Journal of Modern Physics B  2001 

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  • Charge Ordering and Optical Conductivity of MMX Chains

    M. Kuwabara, K. Yonemitsu

    Physics in Local Lattice Distortions  2001 

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  • Two-loop renormalization of the quasiparticle weight in two-dimensional electron systems

    J. Kishine, N. Furukawa, K. Yonemitsu

    International Journal of Modern Physics B  2001 

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  • Charge Ordering and Optical Conductivity of MMX Chains (共著)

    Physics in Local Lattice Distortions  2001 

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  • One-Particle vs. Two-Particle Crossover in Weakly Coupled Hubbard Chains and Ladders : Perturbative Renormalization Group Approach(共著)

    Recent Progress in Many-Body Theories  1998 

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  • One-Particle vs. Two-Particle Crossover in Weakly Coupled Hubbard Chains and Ladders : Perturbative Renormalization Group Approach

    J. Kishine, K. Yonemitsu

    Recent Progress in Many-Body Theories  1998 

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  • LOCAL VIBRONIC AND ELECTRONIC EXCITATIONS OF DOPING-INDUCED STATES IN THE COPPER OXIDES

    Manifestations of the Electron-Phonon Interaction in High-Tc Superconductivity  1995 

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  • Local Vibronic and Electronic Excitations of Doping-Induced States in the Copper Oxides

    K. Yonemitsu, A. R. Bisho, J. Lorenzana

    Manifestations of the Electron-Phonon Interaction in High-Tc Superconductivity  1995 

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  • FORMATION OF SOLITON VAND IN ONE-DIMENSIONAL PEIERLS-HUBBARD MODEL

    Nonilinear Coherent Structures in Physics and Bioligy  1994 

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  • Formation of Soliton Band in One-Dimensional Peierls-Hubbard Model

    K. Yonemitsu

    Nonilinear Coherent Structures in Physics and Bioligy  1994 

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  • Infrared Absorption Spectra of Various Doping States in Cuprate Superconductors

    K. Yonemitsu, A. R. Bisho, J. Lorenzana

    Lattice Dffects in High-Tc Superconductors  1992 

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  • INFRARED ABSORPTION SPECTRA OF VARIOUS DOPING STATES IN CUPRATE SUPERCONDUCTORS

    Lattice Dffects in High-Tc Superconductors  1992 

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  • RPA, VERTEX CORRECTION AND SUPERCONDUCTIVITY IN TWO-DIMENSIONAL MODELS

    Strongly Coupled Plasma Physics  1990 

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  • RPA, Vertex Correction and Superconductivity in Two-Dimensional Models

    K. Yonemitsu

    Strongly Coupled Plasma Physics  1990 

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MISC

  • Petahertz driving of charge motion in strongly correlated systems

    岩井伸一郎, 天野辰哉, 川上洋平, 伊藤弘毅, 米満賢治

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   70th   2023

  • Ultrafast magneto-optical responses of spin-orbit assisted Mott insulator α-RuCl3

    天野辰哉, 川上洋平, 伊藤弘毅, 今野克哉, 青山拓也, 今井良宗, 大串研也, 若林裕助, 後藤貫太, 中村優斗, 岸田英夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022

  • Ultrafast magneto-optical responses of spin-orbit assisted Mott insulator α-RuCl3: II

    天野辰哉, 川上洋平, 伊藤弘毅, 今野克哉, 青山拓也, 今井良宗, 大串研也, 若林裕助, 後藤貫太, 中村優斗, 岸田英夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   77 ( 2 )   2022

  • 6-fs SHG spectroscopy in an electronic ferroelectric α-(ET)2I3

    川上洋平, 天野辰哉, 伊藤弘毅, 山本薫, 中村優斗, 岸田英夫, 佐々木孝彦, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022

  • ダイナミクスと新奇物性 α-RuCl3における光磁気効果と超高速電荷ダイナミクス

    天野辰哉, 川上洋平, 伊藤弘毅, 岩井伸一郎, 米満賢治

    固体物理   57 ( 11 )   2022

  • Ultrafast spin dynamics of Kitaev spin liquid candidate α-RuCl3: III

    天野辰哉, 大橋拓純, 川上洋平, 伊藤弘毅, 今野克哉, 青山拓也, 今井良宗, 大串研也, 若林裕助, 後藤貫太, 中村優斗, 岸田英夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   76 ( 1 )   2021

  • Ultrafast spin dynamics of Kitaev spin liquid candidate α-RuCl3: II

    天野辰哉, 赤嶺勇人, 大橋拓純, 川上洋平, 伊藤弘毅, 今野克哉, 長谷川慶直, 佐々木宏也, 青山拓也, 今井良宗, 大串研也, 若林裕助, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • Second and third harmonic generations driven by a strong light field of a 6 fs single-cycle infrared pulse in an organic superconductor: II

    川上洋平, 天野辰哉, 伊藤弘毅, 川口玄太, 山本浩史, 中村優斗, 岸田英夫, 佐々木孝彦, 石原純夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   75 ( 1 )   2020

  • 6fs単一サイクル光強電場による有機超伝導体の非線形電荷振動 III

    川上洋平, 天野辰哉, 赤嶺勇人, 伊藤弘毅, 川口玄太, 山本浩史, 岸田英夫, 佐々木孝彦, 石原純夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   74 ( 1 )   2019

  • 単一サイクル光強電場が駆動する有機超伝導体の非線形電荷振動

    川上洋平, 天野辰哉, 伊藤弘毅, 川口玄太, 山本浩史, 岸田英夫, 伊藤桂介, 佐々木孝彦, 石原純夫, 田中康寛, 米満賢治, 岩井伸一郎

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   80th   2019

  • 6fs単一サイクル近赤外パルスによる有機超伝導体の第2,第3高調波発生

    川上洋平, 天野辰哉, 伊藤弘毅, 岸田英夫, 佐々木孝彦, 石原純夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   74 ( 2 )   2019

  • Photoinduced charge-order melting triggered by 6 fs single-cycle infrared pulses in α-(ET)2I3 II; Changes of reflectivity and SHG intensity

    Akamine Y, Yonemitsu K, Iwai S, Amano T, Kawakami Y, Itoh H, Yamamoto K, Nakamura Y, Kishida H, Sasaki T, Ishihara S

    Meeting Abstracts of the Physical Society of Japan   73 ( 0 )   1550 - 1550   2018

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  • 6fs単一サイクル光強電場による有機超伝導体の非線形電荷振動 II

    川上洋平, 天野辰哉, 米山雄登, 赤嶺勇人, 伊藤弘毅, 川口玄太, 山本浩史, 岸田英夫, 伊藤桂介, 佐々木孝彦, 石原純夫, 田中康寛, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   73 ( 2 )   2018

  • 6fs単一サイクル赤外光による有機超伝導体の非線形電荷振動

    川上洋平, 天野辰哉, 米山雄登, 赤嶺勇人, 伊藤弘毅, 川口玄太, 山本浩史, 岸田英夫, 伊藤桂介, 佐々木孝彦, 石原純夫, 田中康寛, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   73 ( 1 )   2018

  • 6fs単一サイクル赤外光によるα‐(ET)2I3の電荷秩序融解

    川上洋平, 天野辰哉, 米山雄登, 伊藤弘毅, 山本薫, 中村優斗, 岸田英夫, 佐々木孝彦, 石原純夫, 米満賢治, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   72 ( 2 )   ROMBUNNO.22pB21‐2   2017.9

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  • Polarization analysis of light-field induced charge-localization in triangular-latticed organic conductor

    Amano T, Tanaka Y, Yonemitsu K, Iwai S, Yoneyama Y, Kawakami Y, Itoh H, Yamamoto K, Nakamura Y, Kishida H, Sasaki T, Ishihara S

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   1425 - 1425   2017

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    &lt;p&gt;三角格子構造の二次元有機伝導体alpha-(ET)2I3の光強電場誘起の電荷局在を7 fs近赤外光によって明らかにしてきた、今回は、7 fsプローブパルスの偏光を変え、局在電荷状態の異方性を明らかにする。また、ポンプ光による印加電場の偏光方向に対して、電荷局在の効率がどのように変わるのかを調べ、厳密対角化に基ずく理論計算との比較から、光誘起電荷局在の機構を議論する。&lt;/p&gt;

    J-GLOBAL

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  • κ型ET塩の金属-モット絶縁体相境界における超高速臨界現象 III

    米山雄登, 川上洋平, 天野辰哉, 加藤隆寛, 伊藤弘毅, 米山直樹, 佐々木孝彦, 米満賢治, 石原純夫, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   72 ( 1 )   2017

  • 6fs単一サイクル赤外光によって生成されるκ型ET塩のドレスト電子状態

    米山雄登, 天野辰哉, 川上洋平, 伊藤弘毅, 米山直樹, 伊藤桂介, 佐々木孝彦, 米満賢治, 石原純夫, 岩井伸一郎

    日本物理学会講演概要集(CD-ROM)   72 ( 2 )   2017

  • 19aCF-4 Ultrafast dynamics of strong electric field effects in (TMTTF)_2AsF_6

    Naitoh Y, Iwai S, Kawakami K, Ishikawa T, Kato T, Itoh H, Yamamoto K, Sasaki T, Tanaka Y, Yonemitsu K

    Meeting Abstracts of the Physical Society of Japan   70 ( 0 )   1351 - 1351   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_1351

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  • ダイマー結晶における光誘起電荷秩序融解のパルス光強度・形状依存性

    西岡圭太, 米満賢治

    日本物理学会講演概要集(CD-ROM)   70 ( 1 )   2015

  • 対称モノサイクル光パルス励起による負温度状態生成と相互作用反転

    米満賢治, 西岡圭太

    日本物理学会講演概要集(CD-ROM)   70 ( 1 )   2015

  • 19aCF-7 larization dependence of photoinduced charge localization in charge ordered organic conductor

    Ishikawa T, Ishihara S, Tanaka Y, Yonemitsu K, Iwai S, Naitoh Y, Kato T, Kawakami Y, Itoh H, Yamamoto K, Nakamura Y, Kishida H, Sasaki T

    Meeting Abstracts of the Physical Society of Japan   70 ( 0 )   1354 - 1354   2015

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    DOI: 10.11316/jpsgaiyo.70.2.0_1354

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  • 22pCP-10 Correlated charge dynamics driven by 1.5-cycle infrared pulse : electronic ferroelectrics α-(ET)_2I_3 IV

    Ishikawa T, Sasaki T, Ishihara S, Tanaka Y, Yonemitsu K, Iwai S, Sagae Y, Naitoh Y, Kawakami Y, Itoh H, Yamamoto K, Yakushi K, Nakamura Y, Kishida H

    Meeting Abstracts of the Physical Society of Japan   70 ( 0 )   1522 - 1522   2015

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    DOI: 10.11316/jpsgaiyo.70.1.0_1522

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  • 8aAD-2 Ultrafast electronic dynamics driven by 1.5-cycle IR pulse laser : electronic ferroelectrics (TMTTF)_2AsF_6 II

    Sagae Y., Ishikawa T., Naitoh Y., Kawakami Y., Itoh H., Yamamoto K., Yakushi K., Sasaki T., Ishihara S., Yonemitsu K., Iwai S.

    Meeting abstracts of the Physical Society of Japan   69 ( 2 )   510 - 510   2014.8

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  • 光誘起電荷秩序融解のしくみ

    米満 賢治

    パリティ   29 ( 7 )   55 - 59   2014.7

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  • Photoinduced insulating of layered organic metal driven by strong electric field of 1.5-cycle, 7 fs infrared pulse

    S. Iwai, T. Ishikawa, Y. Sagae, Y. Naito, J. Ichimura, Y. Kawakami, H. Itoh, S. Ishihara, K. Yamamoto, K. Yakushi, T. Sasaki, H. Kishida, K. Yonemitsu

    Optics InfoBase Conference Papers   2014.1

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  • 8aAD-4 Correlated charge dynamics driven by 1.5-cycle infrared pulse : electronic ferroelectrics α-(ET)_2I_3 III

    Kawakami Y, Sasaki T, Ishihara S, Tanaka Y, Yonemitsu K, Iwai S, Ishikawa T, Sagae Y, Naitoh Y, Itoh H, Yamamoto K, Yakushi K, Nakamura Y, Kishida H

    Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   510 - 510   2014

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  • ダイマー結晶における光誘起ダイマー間電荷移動の連続光/パルス光による制御

    西岡圭太, 西岡圭太, 米満賢治, 米満賢治

    日本物理学会講演概要集   69 ( 1 )   2014

  • 27pAS-1 Correlated charge dynamics driven by 1.5-cycle infrared pulse : electronic ferroelectrics (TMTTF)_2AsF_6

    Sagae Y, Ishikawa T, Yamada K, Itoh H, Yamamoto K, Yakushi K, Ishihara S, Yonemitsu K, Iwai S

    Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   731 - 731   2014

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  • 27pAS-2 Correlated charge dynamics driven by 1.5-cycle infrared pulse : electronic ferroelectrics α-(ET)_2I_3

    Ishikawa T, Iwai S, Yamada K, Sagae Y, Itoh H, Yamamoto K, Yakushi K, Sasaki T, Ishihara S, Yonemitsu K

    Meeting Abstracts of the Physical Society of Japan   69 ( 0 )   731 - 731   2014

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  • Numerical calculation of photoinduced nonequilibrium phonons in electron-hole-phonon coupled system and frequency modulation in perturbative representation

    Nishioka Keita, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   68 ( 2 )   677 - 677   2013.8

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  • Photoinduced phase transitions in molecular crystals as correlated electron systems : Theoretical approach

    48 ( 1 )   1 - 12   2013.1

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  • 20pPSB-63 Melting of charge order by electric field and nonlinear conduction in two-dimensional organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   67 ( 2 )   571 - 571   2012.8

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  • Material designs and new physical properties in MX-and MMX-Chain compounds

    Masahiro Yamashita, Hiroshi Okamoto, Hiroshi Okamoto, Hiroshi Okamoto, Hiroaki Iguchi, Kaoru Iwano, Hideo Kishida, Hiroyuki Matsuzaki, Hiroyuki Matsuzaki, Minoru Mitsumi, Arao Nakamura, Shinya Takaishi, Kenji Yonemitsu, Kenji Yonemitsu, Kenji Yonemitsu

    Material Designs and New Physical Properties in MX- and MMX-Chain Compounds   9783709113172   1 - 270   2012.6

  • 25pBL-6 Theory of Many-Electron-Phonon Correlations during Photoinduced Phase Transitions

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   808 - 808   2012.3

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  • 26pBK-8 Charge order and nonlinear conduction in organic conductor β-(meso-DMBEDT-TTF)_2PF_6

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   67 ( 1 )   908 - 908   2012.3

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  • 量子化磁場下におけるビスマスナノワイヤのNernst効果:ワイヤ径と温度依存性

    平山尚美, 遠藤彰, 白崎良演, 中村浩章, 長谷川靖洋, 羽田野直道, 藤田和博, 米満賢治

    日本物理学会講演概要集   67 ( 2 )   2012

  • Et2Me2Sb[Pd(dmit)2]2における光誘起電荷秩序融解ダイナクス

    西岡圭太, 米満賢治, 米満賢治, 米満賢治

    日本物理学会講演概要集   67 ( 1 )   2012

  • 22aTC-2 Roles of Lattice Phonons and Molecular Vibrations during Photoinduced Neutral-Ionic Transitions

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   756 - 756   2011.8

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  • 21aTR-8 Theory of nonlinear conduction and charge older with structural distention in quasi-two-dimensional organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   842 - 842   2011.8

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  • 25pHC-6 Role of Intramolecular Vibrations on Neutral-Ionic Transitions Revealed by Photoinduced Dynamics

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   744 - 744   2011.3

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  • 26pPSA-13 Theory of nonlinear conduction for charge-ordered states in θ-type organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   621 - 621   2011.3

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  • ビスマスナノワイヤーの量子化磁場下での熱電特性の理論計算

    平山尚美, 遠藤彰, 藤田和博, 長谷川靖洋, 羽田野直道, 中村浩章, 白崎良演, 米満賢治

    日本物理学会講演概要集   66 ( 2 )   2011

  • Et2Me2Sb[Pd(dmit)2]2における電荷分離相の光誘起融解ダイナミクス

    西岡圭太, 米満賢治

    日本物理学会講演概要集   66 ( 2 )   2011

  • Et2Me2Sb[Pd(dmit)2]2における電荷分離相の光誘起融解の理論

    西岡圭太, 米満賢治

    金属dmit錯体による磁性・伝導性研究の最前線 理研シンポジウム 平成23年   2011

  • 擬一次元スピン軌道相互作用系の熱電効果における量子振動

    中村浩章, 白崎良演, 羽田野直道, 米満賢治, 平山尚美

    日本物理学会講演概要集   66 ( 1 )   2011

  • 電流加熱時の磁場中極低温2次元電子系の冷却効果

    平山尚美, 遠藤彰, 藤田和博, 長谷川靖洋, 羽田野直道, 中村浩章, 白崎良演, 米満賢治

    日本物理学会講演概要集   66 ( 1 )   2011

  • Et2Me2Sb[Pd(dmit)2]2における電荷分離相の光誘起融解の理論

    西岡圭太, 米満賢治

    日本物理学会講演概要集   66 ( 1 )   2011

  • 26aRB-13 Theory of nonlinear conduction for charge-ordered systems on a triangular lattice

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   830 - 830   2010.8

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  • 26aRB-12 Nonequilibrium states and current-voltage characteristics of a one-dimensional Hubbard model attached to electrodes

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   65 ( 2 )   830 - 830   2010.8

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  • 21pHQ-10 Growth dynamics of photoinduced domains in two-dimensional charge-ordered organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   65 ( 1 )   768 - 768   2010.3

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  • 光に誘起された電子状態変化に対する異なる理論的アプローチ(研究会「相関電子系における光誘起現象」報告,研究会報告)

    米満 賢治

    物性研究   94 ( 2 )   224 - 224   2010

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    Other Link: https://projects.repo.nii.ac.jp/?action=repository_uri&item_id=474585

  • 二次元有機導体における電荷秩序の光誘起融解の理論(研究会「相関電子系における光誘起現象」報告,研究会報告)

    田中 康寛, 米満 賢治

    物性研究   94 ( 2 )   222 - 222   2010

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    Other Link: https://projects.repo.nii.ac.jp/?action=repository_uri&item_id=474583

  • 25aXA-5 Photoinduced dynamics in two-dimensional organic conductors : the cases of α-,θ-, andκ-type ET salts

    Miyashita S., Tanaka Y., Iwai S., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   64 ( 2 )   609 - 609   2009.8

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  • 25pYC-7 Theory of nonequilibrium steady state under electric current in two-dimensional charge-ordered systems

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   64 ( 2 )   737 - 737   2009.8

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  • 28pVD-5 Photoinduced dynamics in two-dimensional organic conductors

    Miyashita S., Tanaka Y., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   734 - 734   2009.3

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  • 30aYG-12 Suppression of Rectification at Metal-Mott-Insulator Interfaces : Nonequilibrium Green's-Function Approach

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   64 ( 1 )   858 - 858   2009.3

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  • 21pYD-1 Photoinduced melting of charge order in quasi-two-dimensional organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   63 ( 2 )   643 - 643   2008.8

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  • 23aYH-9 Charge order with lattice distortion and its photoinduced melting in quasi two-dimensional organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   693 - 693   2008.2

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  • 24aTF-10 Effects of electron-phonon couplings on charge orders in θ-type and α-type ET salts : Approach from the strong-coupling limit

    Miyashita S., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   813 - 813   2008.2

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  • 23aYH-1 Energy Transfer to Phonons after Photoexcitation in 1D Correlated E-Ph Systems

    Yonemitsu Kenji, Maeshima Nobuya

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   691 - 691   2008.2

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  • 22aTK-13Transient Spectra during Photo induced Melting of Charge Order in ID E-Ph Systems

    Yonemitsu Kenji, Maeshima Nobuya

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   742 - 742   2007.8

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  • 23pPSB-4 Analysis of polaron states in one-dimensional dimerized Mott insulators

    Maeshima N., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   774 - 774   2007.8

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  • 21aPS-16 Release of charge flustration due to lattice distortions in quasi-two-dimensional organic conductors

    Miyashita S., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   522 - 522   2007.8

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  • 22aTK-9 Photoirradiation effects on charge order in α-(ET)_2I_3

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   741 - 741   2007.8

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  • 光で電子を一斉に動かし物性を変えるしくみの理論--遍歴電子系の光誘起相転移ダイナミクスにおける電子相関の役割

    米満 賢治

    光アライアンス   18 ( 7 )   29 - 33   2007.7

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  • 20pZB-7 CT Processes, Phonon Modes and Efficiency in Photoinduced Melting of Charge Order

    Yonemitsu Kenji, Maeshima Nobuya

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   748 - 748   2007.2

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  • 20pZB-4 Lattice-effect differences between the charge ordering in θ-RhZn salt and that in α-I_3 salt

    Miyashita S., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   748 - 748   2007.2

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  • 21aRA-9 Effects of electron-lattice coupling on charge order in quasi two-dimensional organic conductors

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   856 - 856   2007.2

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  • 20pZB-15 The lowest photoexcited state of dimerized one-dimensional Mott insulators

    Maeshima N., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   750 - 750   2007.2

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  • 20aRA-10 Effect of quantum phonon fluctuations near the neutral-ionic Quantum critical point

    Yamashita Yasufumi, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   62 ( 1 )   841 - 841   2007.2

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  • 25pYF-12 Optical conductivity of charge-ordered ET salts at 1/4-filling; Importance of lattice distortions

    Miyashita S., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   700 - 700   2006.8

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  • 23pQE-12 Photoinduced dynamics of dimerized one-dimensional Mott insulators II

    Maeshima N., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   572 - 572   2006.8

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  • 24pRA-5 Photoinduced Phase Transition Dynamics Depending on Electron Correlations in Organic Semiconductors

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   591 - 591   2006.8

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  • 25pYF-2 Mean field study of the effects of electron-lattice coupling on charge order in θ-(ET)_2X

    Tanaka Yasuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   61 ( 2 )   697 - 697   2006.8

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  • 28aPS-47 Photoinduced dynamics of dimerized one-dimensional Mott insulators

    Maeshima N., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   735 - 735   2006.3

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  • 28pTD-9 Quantum Paraelectricity near the Neutral-Ionic Quantum Critical Points

    Yamashita Yasufumi, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   837 - 837   2006.3

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  • 29pUB-2 Carrier Transport through Molecular Semiconductor/Metal Interfaces (Theory)

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   842 - 842   2006.3

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  • 27pRB-11 Effects of electron-phonon interactions on the charge ordering in θ-type ET salts

    Miyashita S., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   61 ( 1 )   811 - 811   2006.3

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  • 22pWB-9 Effects of Interchain Interactions on Photo induced Ionic-Neutral Phase Transitions

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   719 - 719   2005.8

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  • 20aYD-14 Photoinduced dynamics in one-dimensional Mott and band insulators

    Maeshima N., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   60 ( 2 )   581 - 581   2005.8

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  • 25aYR-7 Quantum Ising model coupled with conducting electrons

    Yamashita Yasufumi, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   905 - 905   2005.3

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  • 26pYK-15 Field Effects on 1D Mott Insulators : Origin of the Ambipolar IV Characteristics

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   805 - 805   2005.3

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  • 27aXQ-3Optical responses of photoexcited states in the 1D ionic-Hubbard model

    Maeshima N., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   60 ( 1 )   722 - 722   2005.3

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  • 13aWH-2 Relaxation process in neutral-ionic, paraelectric-ferroelectric phase transition of TTF-CA

    Inoue Hitoshi, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   59 ( 2 )   750 - 750   2004.8

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  • 28pWG-8 Double Pulse and Interference in Photoinduced Ionic-Neutral Phase Transitions

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   59 ( 1 )   847 - 847   2004.3

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  • Ferroelectric phase transition, ionicity condensation, and multicriticality in charge transfer organic complexes

    Kishine J., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   757 - 757   2003.8

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  • Pulse Electric Field Dependence of Photoinduced Ionic-Neutral Phase Transitions

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   58 ( 2 )   757 - 757   2003.8

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  • Multicritical behavior in the charge-transfer complex TTF-CA : Analysis based on the Q1D Blume-Emery-Griffiths model

    Kishine J., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   779 - 779   2003.3

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  • Competition between I-I solitons and N-I domain walls in photoinduced ionic-to neutral phase transition : Excitation intensity and degree of initial lattice disorder dependability

    Miyashita Naoyuki, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   676 - 676   2003.3

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  • Two-step photo-induced phase transitions in a two-sublattice model

    Otsuka Y., Yonemitsu K.

    Meeting abstracts of the Physical Society of Japan   58 ( 1 )   688 - 688   2003.3

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  • Dimerization disordering and coupled charge-lattice dynamics after photoexcitations in a one-dimensional extended Peierls-Hubbard model.

    Miyashita Naoyuki, Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   57 ( 2 )   644 - 644   2002.8

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  • Quantum Fluctuations and Coherence Recovery in the Photoinduccd Charge-Density-Wave-to-Charge-Polarization Phase Transition in MMX-Chain Compounds

    Yonemitsu Kenji, Miyashita Naoyuki, Kuwabara Makoto

    Meeting abstracts of the Physical Society of Japan   57 ( 2 )   709 - 709   2002.8

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  • 24aYD-13 Domain dynamics after photoexcitations in a one-dimensional Peierls-Hubbard model II.

    Miyashita Naoyuki, Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   663 - 663   2002.3

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  • 25pXM-5 Lattice Instability and Excitation Spectra around Neutral-Ionic Phase I ansitioneby the finite-T DMRG Method

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   57 ( 1 )   781 - 781   2002.3

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  • Quantum Fluctuations, Thermal Fluctuations and Lattice Instability in Neutral-Ionic Phase Transitions at Finite Temperatures

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   688 - 688   2001.9

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  • Domain dynamics after photoexcitations in a one-dimensional Peierls-Hubbard model

    Miyashita Naoyuki, Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   610 - 610   2001.9

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  • Incommensurate States near Mott Transition to Three-Fold Charge Ordering State

    Kuwabara Makoto, Yonemitsu Kenji, Ohta Hitoshi

    Meeting abstracts of the Physical Society of Japan   56 ( 2 )   699 - 699   2001.9

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  • Charge/Lattice Ordering and Optical Responses of Halogen-Bridged Binuclear Metal Complexes (MMX)

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   682 - 682   2001.3

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  • Self-Doping and Mott Transition to Three-Fold Charge Ordering State

    Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   780 - 780   2001.3

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  • Spectra near Quantum Phase Transitions in Quasi-One-Dimensional Conductors

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   775 - 775   2001.3

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  • Optical Conductivities of Dimerized Two-Band Systems and θ-ET Salts

    Mori Michiyasu, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   56 ( 1 )   780 - 780   2001.3

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  • Excitation Spectra of Quasi-One-Dimensional Conductors : Spinless Case

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   700 - 700   2000.9

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  • Charge Ordering Patterns and Collective Excitation Spectra in θ-(BEDT-TTF) Salts

    Mori Michiyasu, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   708 - 708   2000.9

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  • Charge ordering and absorption spectra in MMX chains

    Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   55 ( 2 )   743 - 743   2000.9

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  • Charge Ordering Patterns and Excitation Spectra

    Mori Michiyasu, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   702 - 702   2000.3

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  • Charge ordcring and effects of p-d coupling in MMX chains

    Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   55 ( 1 )   744 - 744   2000.3

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  • d=1+ε連続次元ハーフフィリング電子系の量子相転移と電荷ギャップ崩壊

    岸根順一郎, 米満賢治

    日本物理学会講演概要集   54 ( 2 )   727 - 727   1999.9

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  • 26aE-1 Electron Correlation in Low-Dimensional Dimerized Conductors, : Pd(dmit)_2 Salts and MMX-Chain Complexes

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   54 ( 2 )   759 - 759   1999.9

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  • 擬1次元電子系の量子揺らぎと次元性が引き起こす相転移とクロスオーバー

    岸根順一郎, 米満賢治

    物性研だより   39 ( 2 )   34 - 35   1999.7

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  • 28a-XB-9 Antiferromagnet-SDW Transition in Quasi-One-Dimensional Organic Conductors

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   242 - 242   1999.3

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  • 30-p-XB-1 Numerical studies of the ground state phase diagram for MMX chain

    Kuwabara Makoto, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   264 - 264   1999.3

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  • 29a-XB-2 Theoretical study of electronic properties of k-BEDT-TTF salts.

    Imamura Y., Ten-no S., Yonemitsu K., Tanimura Y.

    Meeting abstracts of the Physical Society of Japan   54 ( 1 )   251 - 251   1999.3

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  • モット転移とアンダーソン局在の競合に対する次元性効果

    岸根順一郎, 米満賢治

    日本物理学会講演概要集   54 ( 1 )   675 - 675   1999.3

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  • 部分的に平坦なフェルミ面を持つ2次元電子系の低エネルギー漸近挙動 準粒子ウエイト繰り込みの異方的流れ

    岸根順一郎, 米満賢治

    日本物理学会講演概要集   53 ( 2 )   613 - 613   1998.9

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  • Magnetic properties and Conductivity of CoPc(AsF_6)_<0.5>II

    OGAWA Takuhiro, YONEMITSU Kenji

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   326 - 326   1998.9

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  • Effective Exchange Interaction in Dimerized Systems

    MORI Michiyasu, YONEMITSU Kenji, KINO Hiori

    Meeting abstracts of the Physical Society of Japan   53 ( 2 )   291 - 291   1998.9

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  • 1p-PSA-54 Magnetic and Orderings in Strongly Dimerized Two Band Systems.

    KINO H., MIYAZAKI T., MORI M., YONEMITSU K.

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   445 - 445   1998.3

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  • Polaron Paring and Its Symmetry in the Strong Antiferromagnetic Background Institute for Molecular Science

    YONEMITSU Kenji

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   231 - 231   1998.3

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  • 2p-YX-6 How to Make a Molecule with Negative Polarizability? : A New Photoinduced Phenomenon

    SUN Xin, YONEMITSU Kenji

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   271 - 271   1998.3

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  • Pressure and Interaction Effects for Ground State Properties of Pd(dmit)_2 Salts

    MORI Michiyasu, YONEMITSU Kenji

    Meeting abstracts of the Physical Society of Japan   53 ( 1 )   246 - 246   1998.3

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  • Dimensional Crossovers in Strongly Correlated Low-dimensional Systems.

    岸根順一郎, 米満賢治

    日本物理学会講演概要集(年会)   53 ( 1 )   245   1998.3

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  • 5p-C-11 Magnetic properties and Conductivity of CoPc(AsF_6)_0.5

    Ogawa Takuhiro, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   52 ( 2 )   271 - 271   1997.9

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  • 6p-C-11 Metal-Insulator Transition in 2-Bands Systems of 1 and 2 Dimension

    Mori Michiyasu, Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   52 ( 2 )   283 - 283   1997.9

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  • 6p-C-12 Dimensionality and Phonon Effects on Superconductivity in a Two-Band System

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   52 ( 2 )   284 - 284   1997.9

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  • Superconducting Instability in Doped Ladder System: Interladder Pair Tunneling and Dimensionality Crossover.

    岸根順一郎, 米満賢治

    日本物理学会講演概要集(分科会)   1997   601   1997.9

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  • 29p-C-5 Renormalization-Group Approach to Metal-Insulator Transition in (DCNQI)_2Cu

    Yonemitsu Kenji

    Meeting abstracts of the Physical Society of Japan   52 ( 1 )   276 - 276   1997.3

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  • Vortex states of on-site attractive Hubbard model and extended Hubbard model by mean field approximation

    Nishio T., Yonemitsu K., Ebisawa H.

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1996 ( 3 )   480 - 480   1996.9

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  • Interference of the Umklapp process with electron-phonon interaction in 1D 1/4-filled electron systems

    YONEMITSU Kenji

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1996 ( 2 )   415 - 415   1996.9

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  • de Haas-van Alphen Oscillations of Attractive Hubberd Model

    SATO Jun, NISHIO Takayuki, YONEMITSU Kenji, EBISAWA Hiromichi

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1996 ( 3 )   378 - 378   1996.9

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  • 2p-YD-9 Vortex states of Attractive Hubbard Model by Mean Field Approximation

    Nishio T., Yonemitsu K., Ebisawa H.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   51 ( 3 )   466 - 466   1996.3

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  • 30p-K-10 Scaling in Nearly-Half-Filled One-Dimensional Electron-Phonon Systems

    YONEMITSU Kenji

    Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1995 ( 2 )   422 - 422   1995.9

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  • Berry Phases and the Symmetry of Hole Pairs in the Holstein-tJ Model

    Yonemitsu K., Zhong J., Schuttler H.-B.

    Abstracts of the meeting of the Physical Society of Japan. Annual meeting   50 ( 3 )   354 - 354   1995.3

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  • 3a-ZB-12 Spin Fluctuation and Superconductivity in the Two-Dimensional CuO_2 Plane

    Yonemitsu Kenji

    1989 ( 3 )   225 - 225   1989.9

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  • 28p-SC-13 Vertex Correction for a Superconducting State in the Hubbard Model

    Yonemitsu Kenji

    44 ( 3 )   183 - 183   1989.3

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  • 28a-QB-3 ポリアセチレンにおけるソリトンおよびポーラロンとフォノン : 電子相関の効果

    米満 賢治, 小野 嘉之

    秋の分科会講演予稿集   1986 ( 3 )   337 - 337   1986.9

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Presentations

  • Temperature dependence of ultrafast carrier dynamics in YBa2Cu3Oy II

    Y. Taniguchi, R. Kato, H. Ohashi, T. Amano, Y. Kawakami, H. Itoh, Y. Nakamura, H. Kishida, T. Sasaki, T. Nishizaki, K. Ohgushi, K. Yonemitsu, S. Iwai

    JPS Annual (80th) Meeting  2025.9 

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  • Onsager reciprocal theorem for the spin Hall conductivity in periodically driven systems

    Naoya Arakawa, Kenji Yonemitsu

    JPS 2025 Spring Meeting  2025.3 

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    Event date: 2025.3    

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  • Temperature dependence of ultrafast carrier dynamics in YBa2Cu3Oy

    Y. Taniguchi, R. Kato, H. Ohashi, T. Amano, Y. Kawakami, H. Itoh, Y. Nakamura, H. Kishida, T. Sasaki, T. Nishizaki, K. Ohgushi, K. Yonemitsu, S. Iwai

    JPS 2025 Spring Meeting  2025.3 

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  • Ultrafast dynamics of photoinduced disorder in an electronic ferroelectric α-(ET)2I3 II

    Y. Kawakami, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, K. Yonemitsu, S. Iwai

    JPS Annual (79th) Meeting  2024.9 

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  • Ultrafast quasiparticle dynamics in high-Tc superconducting cuprate YBa2Cu3Oy captured by NIR 6 fs pulses II

    Y. Taniguchi, R. Kato, H. Ohashi, T. Amano, Y. Kawakami, H. Itoh, Y. Nakamura, H. Kishida, T. Sasaki, T. Nishizaki, K. Ohgushi, K. Yonemitsu, S. Iwai

    JPS Annual (79th) Meeting  2024.9 

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  • Photoinduced insulator-metal transition and ultrafast structural change in V2O3 II

    T. Amano, Y. Kawakami, H. Itoh, Y. Nakamura, H. Kishida, K. Yonemitsu, L. Cario, E. Janod, B. Corraze, M. Lorenc, H. Cailleau, S. Iwai

    JPS Annual (79th) Meeting  2024.9 

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  • Onsager reciprocal theorem for an off-diagonal conductivity and its symmetry in a multiorbital metal driven by bicircularly polarized light

    Naoya Arakawa, Kenji Yonemitsu

    JPS Annual (79th) Meeting  2024.9 

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  • Photoinduced symmetry breaking, off-diagonal conductivity and magnetism Invited

    N. Arakawa, K. Yonemitsu

    Transformations of Correlated Electronic States by Electric or Optical Impacts. International research school and workshop (IMPACT 2024)  2024.8 

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  • Spin Hall effect and anomalous Hall effect of transition-metal dichalcogenides driven by circularly polarized light

    Naoya Arakawa, Kenji Yonemitsu

    JPS 2024 Spring Meeting  2024.3 

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  • Valley degree of freedom and anomalous Hall effect in graphene driven by bicircularly polarized light

    Naoya Arakawa, Kenji Yonemitsu

    JPS 2024 Spring Meeting  2024.3 

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  • Ultrafast dynamics of photoinduced disorder in an electronic ferroelectric α-(ET)2I3

    Y. Kawakami, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, K. Yonemitsu, S. Iwai

    JPS Annual (78th) Meeting  2023.9 

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  • Light-induced mirror symmetry breaking and charge transport

    Naoya Arakawa, Kenji Yonemitsu

    JPS Annual (78th) Meeting  2023.9 

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  • Spin Hall and anomalous Hall effects of a multiorbital metal driven by bicircularly polarized light

    Naoya Arakawa, Kenji Yonemitsu

    JPS 2023 Spring Meeting  2023.3 

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  • 超伝導体、強相関電子系におけるペタヘルツ電子駆動 Invited

    岩井 伸一郎, 天野 辰哉, 川上 洋平, 伊藤 弘毅, 米満 賢治

    第70回応用物理学会春季学術講演会  2023.3 

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  • スピン軌道モット絶縁体α-RuCl3の光誘起磁化ダイナミクス Invited

    米満賢治

    研究会 ―相関電子の軌道自由度から生まれる多様性と普遍性―  2022.10 

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  • Synchronized Charge Oscillations in Conductors with Dimer Structures

    Kenji Yonemitsu

    The 14th International Symposium on Crystalline Organic Metals, Superconductors and Magnets (ISCOM2022)  2022.9 

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  • Spin Hall effect and anomalous Hall effect of a photo-irradiated multiorbital metal

    Naoya Arakawa, Kenji Yonemitsu

    JPS 2022 Autumn Meeting  2022.9 

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  • Ultrafast magneto-optical responses of spin-orbit assisted Mott insulator α-RuCl3 II

    T. Amano, Y. Kawakami, H. Itoh, K. Konno, T. Aoyama, Y. Imai, K. Ohgushi, Y. Wakabayashi, K. Goto, Y. Nakamura, H. Kishida, K. Yonemitsu, S. Iwai

    JPS 2022 Autumn Meeting  2022.9 

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  • Oscillating charge order and spin polarization in photoexcited Mott insulators Invited

    K. Yonemitsu

    International School and Workshop on Electronic Crystals (ECRYS-2022)  2022.8 

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  • Nonlinear charge oscillations and second harmonic generation in organic conductors with dimerized structures

    K. Yonemitsu

    International Conference on Science and Technology of Synthetic Metals (ICSM2022)  2022.7 

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  • 6-fs SHG spectroscopy in an electronic ferroelectric α-(ET)2I3

    Y. Kawakami, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, K. Yonemitsu, S. Iwai

    JPS Annual (77th) Meeting  2022.3 

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  • Ultrafast magneto-optical responses of spin-orbit assisted Mott insulator α-RuCl3

    T. Amano, Y. Kawakami, H. Itoh, K. Konno, T. Aoyama, Y. Imai, K. Ohgushi, Y. Wakabayashi, K. Goto, Y. Nakamura, H. Kishida, K. Yonemitsu, S. Iwai

    JPS Annual (77th) Meeting  2022.3 

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  • Photoinduced Magnetization Dynamics in a Three-Orbital Hubbard Model for α-RuCl3

    Kenji Yonemitsu

    JPS Annual (77th) Meeting  2022.3 

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  • Ultrafast spin/charge dynamics in quantum-spin materials: Symmetry aspects Invited

    K. Yonemitsu

    The 7th International Conference on Photoinduced Phase Transitions and Cooperative Phenomena (PIPT7)  2021.11 

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  • Mechanism for Synchronization of Charge Oscillations in Dimer Lattices

    Kenji Yonemitsu, Philipp Werner

    JPS 2021 Autumn Meeting  2021.9 

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  • Photoinduced Charge Oscillations in Dimerized Organic Conductors International conference

    K. Yonemitsu

    The 13th International Symposium on Crystalline Organic Metals, Superconductors and Magnets (ISCOM2019)  2019.9  Tomar, Portugal

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  • Synchronized charge oscillation after a strong optical electric field is applied to superconductors with dimerized crystal structures

    K. Yonemitsu

    Gordon Research Conference on Conductivity & Magnetism in Molecular Materials  2018.8  Smithfield, RI, USA

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  • Conditions for Photoinduced Enhancement/Suppression of Orders: Charge Order and Excitonic Condensation

    K. Yonemitsu

    International School and Workshop on Electronic Crystals, ECRYS-2017  2017.8  Cargese, France

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  • Photoinduced Interaction Modulation and Charge Localization: Order Formed in a Quasi-Two-Dimensional Organic Conductor

    K. Yonemitsui

    International Research School: Electronic States and Phases Induced by Electric or Optical Impacts (IMPACT 2016)  2016.8  Cargese, France

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  • Charge orders induced by strong optical electric field and anisotropic transfers/ interactions

    K. Yonemitsu

    Gordon Research Conference on Conductivity & Magnetism in Molecular Materials  2016.8  South Hadley, MA, USA

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  • Ultrafast optical response of the metallic phase of α-(ET)2I3 induced by 7 fs infrared pulse

    T. Ishikawa, Y. Naitoh, Y. Kawakami, H. Itoh, K. Yamamoto, K. Yakushi, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, S. Iwai

    The 11th International Symposium on Crystalline Organic Metals Superconductors and Magnets (ISCOM2015)  2015.9  Bad G\"ogging, Germany

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  • Negative-Temperature State and Phase Separation Induced by Symmetric Monocycle Optical Pulse in Extended Hubbard Models

    K. Yonemitsu, Y. Tanaka, H. Yanagiya

    The 11th International Symposium on Crystalline Organic Metals Superconductors and Magnets (ISCOM2015)  2015.9  Bad G\"ogging, Germany

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  • Optical Control of Charge Transfers Using Molecular Hierarchy and Photoinduced Charge-Order Melting

    K. Yonemitsu, K. Nishioka

    International Conference on Science and Technology of Synthetic Metals 2014 (ICSM 2014)  2014.7 

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  • Pulsed vs. CW Laser Excitations: Different Controlling Mechanisms of Photoinduced Charge-Order Melting in Molecular Crystals

    K. Yonemitsu, K. Nishioka

    The 5th International Conference on Photoinduced Phase Transitions and Cooperative Phenomena (PIPT5)  2014.6 

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  • Photoinduced Dynamics during Charge-Order Melting: Nonequilibrium Phonon-Frequency Modulation International conference

    K. Yonemitsu, K. Nishioka

    The 11th China-Japan Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena  2013.9 

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  • Intramolecular Orbital Excitations and Frequency Modulation of Molecular Vibrations during Photoinduced Charge-Order Melting International conference

    K. Yonemitsu, K. Nishioka

    The 10th International Symposium on Crystalline Organic Metals Superconductors and Magnets (ISCOM2013)  2013.7 

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  • Out-of-equilibrium electron-phonon correlations during photoinduced melting of charge order in molecular conductors

    K. Yonemitsu, K. Nishioka

    International Conference on Electronic States and Phases Induced by Electric or Optical Impacts (IMPACT)  2012.9 

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  • Nonlinear Conduction by Melting of Charge Order in Quasi-Two-Dimensional Organic Conductors

    Y. Tanaka, K. Yonemitsu

    International Conference on Electronic States and Phases Induced by Electric or Optical Impacts (IMPACT2012)  2012.9  Orsay (France)

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  • Dynamics of Photoinduced Charge-order Melting in Intra- and Intermolecular Electron-phonon Coupled Systems

    K. Nishioka, K. Yonemitsu

    International Conference on Electronic States and Phases Induced by Electric or Optical Impacts (IMPACT2012)  2012.9  Orsay (France)

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  • Photoinduced electron-phonon interference in charge-ordered molecular conductors International conference

    K. Yonemitsu, K. Nishioka

    The 10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials (EXCON2012)  2012.7 

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  • Nonequilibrium States and I-V Characteristics in One-Dimensional Band and Mott Insulators Attached to Electrodes

    Y. Tanaka, K. Yonemitsu

    The 19th International Conference on Magnetism (ICM2012) with Strongly Correlated Electron Systems (SCES)  2012.7  Busan (Korea)

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  • Roles of molecular vibrations in photoinduced insulator-to-metal and neutral-to-ionic transitions

    K. Yonemitsu

    The 9th International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets (ISCOM2011)  2011.9 

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  • Interplay between correlated electrons and quantum phonons in photoinduced insulator-to-metal transitions

    K. Yonemitsu

    The 14th Korea-Japan Molecular Science Symposium on New Visions for Spectroscopy and Computation: Temporal and Spatial Adventures of Molecular Sciences, Busan, Korea  2011.7 

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  • Interplay between Correlated Electrons and Quantum Phonons in Organic Compounds

    K. Yonemitsu

    The 4th International Conference on Photoinduced Phase Transitions and Cooperative Phenomena (PIPT4)  2011.6 

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  • Theory of photoinduced electron-phonon-coupled dynamics in 2D charge-ordered and Mott-insulating systems

    K. Yonemitsu

    Workshop on Ultrafast Dynamics in Strongly Correlated Systems, Zurich, Switzerland  2011.4 

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  • Photoinduced phase transition dynamics: Interplay between correlated electrons and molecular vibrations during insulator-metal and neutral-ionic transitions

    K. Yonemitsu

    International School and Symposium on Multifunctional Molecule-based Materials, Argonne, Illinois, U.S.A.  2011.3 

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  • Photoinduced Insulator-to-Metal Transition Dynamics in Models for Quasi-Two-Dimensional Organic Conductors

    K. Yonemitsu, Y. Tanaka, S. Miyashita, N. Maeshima

    The 9th International Conference on Excitonic and Photonic Processes in Condensed and Nano-Materials (EXCON'10)  2010.7 

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  • Photoinduced charge-ordered insulator-to-metal transitions governed by frustration and lattice effects

    K. Yonemitsu, Y. Tanaka, S. Miyashita

    Gordon Research Conference on Ultrafast Phenomena in Cooperative Systems, Galveston, Texas, U.S.A.  2010.3 

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  • Nonequilibrium Green's Function Approach to Current-Voltage Characteristics in Two-Dimensional Charge-Ordered Systems

    Y. Tanaka, K. Yonemitsu

    5th International Symposium on Molecular Materials: Electronics, Photonics and Spintronics, Rennes, France  2009.10 

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  • Photoinduced Charge-Ordered Insulator-to-Metal Transitions Governed by Frustration and Lattice Effects

    K. Yonemitsu, Y. Tanaka

    5th International Symposium on Molecular Materials: Electronics, Photonics and Spintronics, Rennes, France  2009.10 

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  • Effects of Electron-Phonon Couplings on Charge Orders in $ \theta $- and $ \alpha $-Type BEDT-TTF Salts

    S. Miyashita, K. Yonemitsu

    International Symposium on Molecular Materials Chemistry, Solid State Physics, Theory, Nanotechnology From Molecule to Molecular Device (MOLMAT2008), Toulouse, France  2008.7 

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  • Suppression of Rectification at Interfaces between Metals and Organic Mott Insulators

    K. Yonemitsu, N. Maeshima, T. Hasegawa

    International Symposium on Molecular Materials Chemistry, Solid State Physics, Theory, Nanotechnology From Molecule to Molecular Device (MOLMAT2008), Toulouse, France  2008.7 

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  • Photoinduced Charge Order and Melting Dynamics in 1/4-Filled Organic Conductors

    K. Yonemitsu

    Gordon Research Conference on Ultrafast Phenomena in Cooperative Systems, Il Ciocco, Lucca (Barga), Italy  2008.2 

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  • Photoinduced Charge Order and Melting Dynamics in 1/4-Filled Organic Conductors

    K. Yonemitsu

    International Meeting of Japan-France Core-to-Core Project, Rennes, France  2007.12 

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  • Photoinduced Charge Order and Melting Dynamics in Quarter-Filled Organic Conductors

    K. Yonemitsu

    The 9th China-Japan Joint Symposium on Conduction and Photoconduction in Organic Solids and Related Phenomena,Beijing, China  2007.10 

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  • Photoinduced melting of charge and lattice orders viewed from theoretical transient spectra

    K. Yonemitsu

    Pre-conference PIPT 2008 Seminar, Wroclaw, Poland  2007.6 

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  • Charge ordering in $\theta$-(BEDT-TTF)_2 RbZn(SCN)_4 : Cooperative effects of electron correlations and lattice distortions

    S. Miyashita, K. Yonemitsu

    The International Conference on Science and Technology of Synthetic Metals (ICSM2006), Dublin, Ireland  2006.7 

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  • Quantum Paraelectricity near the Neutral-Ionic Critical Point

    Y. Yamashita, K. Yonemitsu

    The International Conference on Science and Technology of Synthetic Metals (ICSM2006), Dublin, Ireland  2006.7 

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  • Photoinduced dynamics of dimerized one-dimensional Mott insulators

    N. Maeshima, K. Yonemitsu

    The International Conference on Science and Technology of Synthetic Metals (ICSM2006), Dublin, Ireland  2006.7 

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  • Correlated Charge Transport through Mott-Insulator-Metal Interfaces

    K. Yonemitsu, N. Maeshima

    The International Conference on Science and Technology of Synthetic Metals (ICSM2006), Dublin, Ireland  2006.7 

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  • Mechanism of ambipolar field-effect transistors on one-dimensional organic Mott insulators

    K. Yonemitsu

    The 2005 International Chemical Congress of Pacific Basin Societies  2005.12 

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  • Photoinduced dynamics and nonequilibrium characteristics in quasi-one-dimensional electron systems: Mott insulators vs. band insulators

    K. Yonemitsu

    Second International Conference on "Photo-induced Phase Transitions; Cooperative, Non-linear and Functional Properties"  2005.5  Rennes, France

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  • Theory of photoinduced phase dynamics in organic charge-transfer complexes

    K. Yonemitsu

    6th International Conference on Excitonic Processes in Condensed Matter  2004.7 

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  • Theoretical perspectives on photoinduced phase transitions

    K. Yonemitsu

    International Seminar on "Challenges and Perspectives of Photo-induced Cooperative Phenomena," Wroclaw, Poland  2004.7 

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  • Photoinduced Dynamics of Coupled Charge-Lattice Systems in One Dimension

    K. Yonemitsu

    NEDO Europe-Japan Meeting "Intelligent Charge-Transfer Materials," Rennes, France  2002.10 

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  • Photoexcited states and photoinduced dynamics in electronic phases of MMX-chain systems

    K. Yonemitsu, N. Miyashita, M. Kuwabara

    International Conference on Science and Technology of Synthetic Metals (ICSM2002)  2002.6 

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  • Correlation and Lattice Effects on Charge Ordering and Dynamics in Quasi-One-Dimensional \pi and p-d Electron Systems

    K. Yonemitsu

    The 7th China-Japan Joint Symposium on Conduction and Photo-conduction in Organic Solids and Related Phenomena (CJOSS-7), Guangzhou, China  2001.11 

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  • Magnetic and Structural Properties of MMX Chains

    M. Kuwabara, K. Yonemitsu

    The Third International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets, Oxford, UK  1999.9 

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  • Cation Effects on Ground State Phases of Pd(dmit)$_2$ Salts

    M. Mori, K. Yonemitsu, H. Kino

    The Third International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets, Oxford, UK  1999.9 

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  • Geometry, Universality and Dimensional Grossovers in Weakly-Coupled One-Dimensional Conductors

    J. Kishine, K. Yonemitsu

    X Trieste Workshop on Open Problems in Strongly Conelated Electron Systems, Trieste, Italy  1998.7 

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  • Berry Phase and Symmetry of Hole Pairs in the Holstein-tJ Model

    K. Yonemitsu, J. Zhong, H.-B. Sch, u

    Workshop in the Correlated Electron Theory Program, Los Alamos, New Mexico, U. S. A.  1994.8 

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  • Dynamics of Holes in the Holstein-Hubbard Model

    K. Yonemitsu, J. Zhong, H.-B. Sch, u

    New Methods in Electronic Structure Calculations, Santa Barbara, California, U. S. A.  1994.6 

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  • Semiclassical Method for Bipolaron Tunneling

    K. Yonemitsu

    New Methods in Electronic Structure Calculations, Santa Barbara, California, U. S. A.  1994.6 

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  • Local Vibronic and Electronic Excitations of Doping-Induced States in the Copper Oxides

    K. Yonemitsu, A. R. Bisho, J. Lorenzana

    II$^{\rm nd}$ CINVESTAV Superconductivity Symposium on the Manifestations of the Electron-Phonon Interaction in High-T$_{\rm c}$ Superconductivity  1992.11 

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  • Local Excitations of Doping States in the Copper Oxides

    K. Yonemitsu, A. R. Bishop, J. Lorenzana

    Gordon Research Conference on Condensed Matter Physics : Collective States in Solids with Localized Moments, Wolfeboro, New Hampshire, U. S. A.  1992.8 

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  • RPA Approach to Collective Modes around Inhomogeneous Mean-Field States

    K. Yonemitsu, I. Batisti\'c, A. R. Bishop

    VIIth International Conference on Recent Progress in Many Body Theories, Minneapolis, Minnesota, U. S. A.  1991.8 

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    Presentation type:Poster presentation  

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Awards

  • Editors' Choice

    2024.8   JPSJ   Light-Induced Mirror Symmetry Breaking and Charge Transport

    Naoya Arakawa, Kenji Yonemitsu

  • JPSJ Outstanding Referee

    2015.3   The Physical Society of Japan  

    YONEMITSU Kenji

  • Editors' Choice

    2013.9   JPSJ   Intra- and Interdimer Electron-Phonon Concerted Mechanism of Photoinduced Charge-Order Melting in Metal Complex Et$_2$Me$_2$Sb[Pd(dmit)$_2$]$_2$

    Keita Nishoka, Kenji Yonemitsu

Research Projects

  • 強相関量子物質におけるアト秒光機能の開拓

    2018.11 - 2028.3

    科学技術振興機構  光・量子飛躍フラッグシッププログラム(Q-LEAP) 

    岩井 伸一郎

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    Grant type:Competitive

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  • Optical functions through symmetry breaking driven by carrier-envelope phase control of light

    2019.10 - 2025.3

    Japan Science and Technology Agency  CREST  Tohoku Univ., Nagoya Univ., Osaka Univ. Chuo Univ.

    Shinichiro Iwai

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  • Theory of Modulation of Effective Interactions and Coherent Manipulation of Electronic States by Strong Optical Fields

    Grant number:16K05459  2016.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Chuo University

    Yonemitsu Kenji

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    Authorship:Principal investigator  Grant type:Competitive

    For organic conductors with α-type structure, it is shown that photoinduced transient charge order requires not only dynamical localization that suppresses electronic mobility but also electron-electron interactions that compete with the electronic mobility. For organic conductors with κ-type dimerized structure, after strong photoexcitation that produces large charge disproportionation, charge oscillations are synchronized through electron-electron interactions, and a stimulated emission occurs. The mechanism is clarified through numerical simulations and an analysis of equations of charge motion. Furthermore, for a multi-orbital electron system on a honeycomb lattice that exhibits a quantum-spin-liquid state, the inverse Faraday effect is observed, where a circularly polarized light field produces magnetization perpendicular to the lattice. This fact is demonstrated by calculations of photoinduced magnetization dynamics, and its origin is clarified by quantum Floquet theory.

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  • 5フェムト秒極超短赤外パルス光による強相関電子系の動的局在と秩序形成の研究

    2015.4 - 2019.3

    日本学術振興会科学研究費補助金  基盤研究(A) 

    岩井 伸一郎

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  • 分子性導体の外場誘起非線形現象における階層間結合効果の理論

    2011.4 - 2016.3

    日本学術振興会学術研究助成基金助成金  科研費基盤研究(C) 

    米満 賢治

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  • Ultrafast Coherent controlof electro-lattice by 10 fs infrared pulse

    Grant number:23244062  2011.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)  Tohoku University

    IWAI Shinichiro, YONEMITSU Kenji, ITOH Hirotake, YAMAMOTO Kaoru, SASAKI Takahiko, SAITO Shingo

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    Grant type:Competitive

    12 fs(2.5-cycle) and 7 fs (1.5-cycle, CEP stabilized )pulses in near infrared region have been developed. Those ultrashort pulses were utilized to clarify the initial dynamics of photoinduced phase transitions mainly in organic conductors(BEDT-TTF salts) . We captured the snapshots of i) Photoinduced melting of charge ordering begins with the coherent charge gap oscillation and ii) Photoinduced insulator to metal transition in dimer Mott insulator is driven by the interactions between intra-dimer exciton and the intra-dimer and inter-dimer vibrations.iii) Moreover, by applying strong 1.5-cycle light electric field of > 10 MV/cm, photoinduced charge ordering in organic metal was succeeded to realized. iv) Theoretical analysis considering the intra- and inter molecular degrees of freedom has been made; Conditions for charge localization and the repulsive-attractive conversion of interactions driven by strong light field were investigated for CW and pulsed light.

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  • 光技術が先導する臨界的非平衡物質科学

    2009.11 - 2015.3

    科学技術振興機構  戦略的創造研究推進事業 

    腰原 伸也

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    Grant type:Competitive

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  • Quantum Effect on Thermoelectric effect and Proposal of Nano Thermomagnetic device

    Grant number:20340101  2008.4 - 2012.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  National Institute for Fusion Science

    NAKAMURA Hiroaki, HATANO Naomichi, YONEMITSU Kenji, ENDO Akira, HASEGAWA Yasuhiro, SHIRASAKI Ryoen, FUJII Tatsuya

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    Grant type:Competitive

    To reveal the mechanism of quantum thermoelectric effect in a magnetic field, we established both theories and experiments. We obtained the following results :(i) estimation of Nernst coefficients for Bi using the theory of"phonon drag",(ii) proposal of rectification effect in metal-semiconductor junction,(iii) measurement of Nernst voltage for GaAs/AlGaAs,(iv) development of simulation for transport equation of electric and heat currents, and(v) measurement of transport coefficients of Bi nano-wire.

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  • 次世代ナノ統合シミュレーションソフトウェアの研究開発

    2006.4 - 2012.3

    文部科学省  科学技術試験研究委託業務 

    平田 文男

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  • Phase controls of molecular compounds by lights

    Grant number:20110005  2008 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  The University of Tokyo

    OKAMOTO Hiroshi, IWAI Shinichiro, SHIMANO Ryo, ISHIZAKA Kyoko, MATSUZAKI Hiroyuki, SHIN Shik, CHAINANI Ashish, ITOH Hirotake, YONEMITSU Kenji, ONDA Ken

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    Grant amount: \214110000 ( Direct Cost: \164700000 、 Indirect Cost: \49410000 )

    In order to achieve the control of electronic phase in molecular solids by lights, we newly developed high time-resolution pump-probe systems and time-resolved terahertz spectroscopy systems. Using them we have detected time evolutions of photoinduced neutral to ionic transition, insulator to metal transition, and melting of spin-density-wave state, and clarified physical mechanisms of those transitions. We have also succeeded in detecting ferroelectric polarizations in organic ferroelectrics and in controlling polarizations by terahertz fields. In addition, we have successfully detected band structures and Fermi surfaces in molecular conductors by using angle-resolved photoelectron spectroscopy.

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  • Theory for Photoinduced Phase Transition Dynamics in Molecular Low-Dimensional Conductors

    Grant number:19540381  2007.4 - 2011.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Institute for Molecular Science

    YONEMITSU Kenji, TANAKA Yasuhiro, YAMASHITA Yasufumi

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    Mechanisms for photoinduced and ultrafast modulation of transport, dielectric, and magnetic properties of molecule-based materials are theoretically clarified. We describe how frozen electrons in insulators are melted by photoirradiation and become itinerant. The obtained results explain experimentally observed behaviors from the early stage to picoseconds timescales. Roles of couplings to lattice phonons and to molecular vibrations are clarified in strongly correlated electron systems. In addition, we propose a method for nonequilibrium steady states by which electronic orders and nonlinear transport properties are self-consistently described. The rectification behavior depends on the mechanism by which the material becomes an insulator. The mechanism responsible for the dielectric breakdown depends on the system size.

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  • Science of Nano-Wire Metal Complexes with Strong Electron-Correlation

    Grant number:15GS0216  2003.4 - 2008.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Creative Scientific Research 

    YAMASHITA Masahiro, YONEMITSU Kenji, OKAMOTO Hiroshi, KATO Masako

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    Quasi-one-dimensional halogen-bridged Pd compounds take a Pd(II)-Pd(IV) mixed-valence state or charge-density-wave state or Peierls Insulator due to the electron-phonon interaction. In order to realize a Pd(III) Mott-Insulator we used the sulphonic acid counter anions with long alkyl chains. In the raw of the five alkyl chain, the Pd compound shows the phase transition from the Pd(II)-Pd(IV) Peierls Insulator into the Pd(III) Mott-Insulator about 200K with hysteresis, which is the inverse Peierls transition. This phenomena were evidenced by ESR, X-ray single-crystal analyses, single-crystal reflection spectra, electrical conductivities, etc. In the case of the ten and twelve alkyl chains, the Pd(III) Mott-insulators are the ground state even in mom temperature, which is the first example. These interesting phenomena are well explained by the fastener effect or chemical pressure of the long alkyl chains. In the Pd(III) Mott-Insulator at 15 K the photo-irradiation with the energy of the charge transfer band (0.5eV) produced the Pd(II)-Pd(IV) Peierls Insulator state, while the photo-irradiation with L5 eV produced the metallic state. Such photo-induced phase transitions occurred in femto-seconds, which are available for the ultra-fast optical communication.

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  • 極限環境下の分子性導体における集団的な電荷ダイナミクスの理論

    Grant number:15073224  2003.4 - 2008.3

    文部科学省科学研究費補助金  特定領域研究(計画研究)  特定領域研究 

    米満 賢治

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    α型およびθ型有機塩(BEDT-TTF)_2Xの電荷秩序相転移の詳細比較: 2次元1/4フィリング系のα型およびθ型のBEDT-TTF塩は、ともに長距離クーロン相互作用が効いて、低温で電荷秩序をもつ。しかしθ型は電子格子相互作用なしでは、低温での結晶構造も水平ストライプ型の電荷秩序も再現されないこと、分子回転によるトランスファー積分の変調が効くこと、α型は電子格子相互作用の影響が小さいことを示した。どちらの塩も不連続転移をするが、θ型はとびが大きく、α型はとびが小さいことも理論的に再現する。θ型では高温で3倍周期の電荷相関をもつことと関係している。これらを基に、電荷秩序の光誘起融解ダイナミクスにおける格子効果の違いを示した。
    金属絶縁体界面を通した電荷輸送特性の絶縁機構による違い:金属と絶縁体を接すると、一般に仕事関数が異なるためにショットキー障壁が生じる。通常のバンド絶縁体の場合は、電圧の向きによって電流の絶対値が大きく変わる整流作用が現れ、モット絶縁体の場合は、整流作用が抑制されることを示した。界面付近のポテンシャル変化を求める際に、電子密度とポテンシャルの関係を仮定することにより解析的にポワソン方程式の解を求め、それを用いた量子的時間発展計算を行った。
    バンド絶縁体とモット絶縁体の電流電圧特性を実験結果と比較し、非常に良い一致をみた。さらにこの結果を、非平衡グリーン関数により解析し、モット絶縁体の場合は界面とバルクの電子状態が密接に関連していることを示した。

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  • Photoinduced Phase Transitions and Nonequilibrium Order Formation in Molecular Materials

    Grant number:15540354  2003.4 - 2007.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C) 

    YONEMITSU Kenji, YAMASHITA Yasufumi

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    In mixed-stack charge-transfer DMTTF-QBr_nCl_<4-n> complexes, the neutral-ionic phase transition takes place at zero temperature if the composition n and pressure are tuned. From the pressure dependence of the transition temperature and the paraelectric behavior following the Barrett formula, it is regarded as a quantum phase transition. Quantum paraelectricity generally appears when quantum fluctuations destroy the ordering of local polarizations. In the above materials, local polarizations appear in the ionic phase, but the quantum paraelectricity appears in the neutral phase only. To consider its origin, we represent polarizations in the ionic phase by Sz=+1/-1, a neutral site by Sz=0, and obtain mean-field solutions in the quantum Blume-Emery-Griffiths model. The quantum tunneling term leads to charge-transfer fluctuations, which cause partial ionicity in the neutral phase. As a consequence, the dielectric permittivity follows the Barrett formula in the neutral phase near the quantum critical point.
    In order to study consequences of the differences between the ionic-to-neutral and neutral-to-ionic transitions in the one-dimensional extended Peierls-Hubbard model with alternating potentials for the TTF-CA complex, we introduce a double pulse of oscillating electric field in the time-dependent Schrodinger equation and vary the interval between the two pulses as well as their strengths. When the dimerized ionic phase is photoexcited, the interference effect is clearly observed owing to the coherence of charge density and lattice displacements. The two pulses constructively interfere with each other if the interval is a multiple of the period of the optical lattice vibration, while they destructively interfere if the interval is a half-odd integer times the period, in the processes toward the neutral phase. Meanwhile, when the neutral phase is photoexcited, the interference effect is weakly observed, where the photoinduced lattice oscillations are considerably incoherent due to random phases.

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  • 超高速コンピュータ網形成プロジェクト(NAREGI)

    2003.4 - 2006.3

    文部科学省  科学技術振興費産学連携等研究費 

    平田 文男

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  • 電荷移動錯体ナノ界面創製

    2000.4 - 2003.3

    NEDO国際共同研究助成 

    三谷 忠興

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  • Charge Order and Photoinduced Nonlinear Dynamics in Low-Dimensional Molecular Conductors

    Grant number:12640361  2000.4 - 2003.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Okazaki National Research Institutes

    YONEMITSU Kenji, KISHINE Jun-ichiro

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    In (DCNQI)_2Cu, conductivity and magnetism are correlated through hybridization of π and d orbitals. In the insulator phase under high pressure, three-fold lattice distortion and paramagnetism coexist. Peierls and Mott mechanisms work cooperatively. Even the level difference between these orbitals is not optimal, self-doping takes place to stabilize this lattice-distorted phase. This fact is demonstrated by the exact diagonalization studies for a two-band Peierls-Hubbard model.
    In organic charge-transfer complex, TTF-CA, a transition takes place from the paraelectric neutral phase to the ferroelectric ionic phase at a low temperature or under high pressure. Photoexcitation also triggers the transition. The time-dependent Schrodinger equation is solved for an extended Peierls-Hubbard model with alternating potentials. Dynamics of charge density and lattice displacements from the ionic phase is studied to reproduce a threshold in phtoexcitation intensity. The Fourier analysis of the time-dependent ionicity clarifies the fast excitonic motion, the slow lattice vibration, and the even slower collective motion of neutral-ionic domain boundaries. Photoexcitation produces ionic domains with the opposite polarization to the initial one, by which the lattice order quickly decays. This is consistent with the faster evolution of the second harmonic generation than the photoreflectivity.
    In halogen-bridged binuclear metal complexes, various charge- and lattice-ordered phases appear depending on the ligand, halogen ion, and counter ion. The mechanisms of the respective electronic phases are investigated in Peierls-Hubbard models. Especially with iodine, platinum, and ligand pop, halogen ion, and counter ion. The mechanisms of the iodine, platinum, and ligand pop, there appear charge-density-wave (CDW) and chargepolarization (CP) phases. Photoexcitation within the hysteresis loop triggers a transition phase does not transfer charge among binuclear units at low energies, and does not grow CDW nuclei even at high energies.

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  • Electronic Structures of Assembled Transition Metal Complexes

    Grant number:10149105  1998.4 - 2002.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Priority Areas (A)  Osaka University

    YAMAGUCHI Kizashi, YONEMITSU Kenji, KOGA Nobuaki, KAWAMURA Takashi

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    Our unified efforts have accomplished several scientific achievements and unique contributions to the project. Some of them are summarized as follows :
    (1) Systematic hybrid calculations of J-values for assembled metal complexes,
    (2) Development of the original general spin orbital (GSO) DFT software for noncollinear magnetic systems such as Mn oxides and Fe sulfides,
    (3) Elucidation of the mechanism of macroscopic quantum tunnelings (MQT) in single-molecule magnet,
    (4) Detailed studies on the electron and spin delocalization in the Rh-Rh metal-metal bond and related binuclear species,
    (5) Theoretical analysis of the reaction mechanisms by the Pt-Co, Pd-Rh and Pt-Rh catalysts,
    (6) Theoretical illuminations of CDW, SDW and other electronic phases in the MMX chains such as the PtPtX system.

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  • 二バンド系における強相関電子相と次元クロスオーバー

    Grant number:10740181  1998.4 - 2000.3

    日本学術振興会科学研究費補助金  奨励研究(A)  奨励研究(A)  岡崎国立共同研究機構

    米満 賢治

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    擬1次元有機導体の次元クロスオーバーの問題は、摂動論的方法で詳細を再現することに限界がある。そこで、数値的な方法の中で最も信頼性が高い密度行列繰り込み群を使って、有限系に対して一体及び二体の相関関数が横方向のトランスファー積分や二量化とともにどう変化するかを計算した。電荷ギャップの振舞は実験で観測されているのと同様なものが得られた。横方向のホッピング相関は二量化による電荷ギャップがトランスファー積分と同程度以上になると急激に抑制されることがわかった。それと同時にスピン相関の横方向コヒーレンスも弱くなる。スピン密度波から反強磁性体への変化に対応すると考えられる。一方、電荷相関はこれらの変化に鈍感で、むしろ次近接相互作用により敏感に変化する。即ち、次近接斥力により4K_Fの成分が成長する。
    擬1次元ハロゲン架橋複核金属錯体には、金属イオン、ハロゲンイオン、配位子、対イオン、溶媒に依存して、多様な混合原子価状態が現れる。配位子としてdtaを使った中性の白金ヨウ素系は室温以上で金属相、低温で交互電荷分極相が観測されている。一方、配位子としてPOPを使った系は、白金塩素系や白金臭素系で電荷密度波相が観測され、白金ヨウ素系で対イオンに依存して、さらに平均原子価相、電荷分極相の存在が示唆された。何がこれらの相の発現させるか調べる為、1次元強相関電子格子系のモデルに強結合展開、厳密対角化、密度行列繰り込み群などを使って電子状態のパラメタ依存性を計算した。配位子がdtaの系は中性で対イオンがなく、複核間の距離が不均一になりやすい為、非対角電子格子相互作用により容易に交互電荷分極相が現れる。ハロゲンがヨウ素の系はP軌道がd軌道に近いので複核間の電子移動が容易である。配位子とハロゲンイオンが同じ場合は対イオンにより複核間の距離が異なり、対角電子格子相互作用の強さが変わることが要因である。

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  • 微小磁性体中の束縛された電子の運動と伝導性、トンネル現象の研究

    Grant number:09236224  1997.4 - 1998.3

    文部省科学研究費補助金  重点領域研究(公募研究)  重点領域研究  岡崎国立共同研究機構

    米満 賢治

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    微小磁性体及び分子磁性体の磁気モーメントのトンネル現象には電子の量子性が強く反映されている。磁気モーメント自身は巨視的なゆっくり変化する量であるが、それは微視的かつ速く運動する電子がになっているからである。それらは断熱波動関数をとおすと、より明確になる。ベリ-の幾何学的位相がπの奇数倍になるか偶数倍になるかにより、経路積分の干渉が弱めあうか強めあうかを決め、前者の場合はトンネル振幅の消滅するという現象が以前から報告されていた。これに似た現象はいろんな系で現われるが、ここで問題にしたのは磁性、伝導、格子変位がすべて絡み合い、かつ異方的な超伝導が起こる場合である。現実には結晶化が困難で微小なサンプルしか得られない、局所的反強磁性相関をもつ有機導体に当てはまる可能性が高い。有機分子の柔らかさのために荷電体付近で局所的に格子が歪み自己束縛がおこるとき、そのような荷電体の運動に付随して、確かにベリ-の幾何学的位相が生じることを、厳密対角化による多体電子波動関数と、半古典的経路積分による動力学、さらに有効モデルの解析的解を使って理論的に示した。これは磁性と格子変位が複合して生じる新しい現象であるが、そのときd波の超伝導電子対形成がおこり伝導に大きな作用を及ぼすことがわかった。このような磁性と伝導の絡み合いは系の次元性や幾何学的特性に大きく依存している。例えばドープされた梯子系の場合は、偶数足梯子の場合に非磁性体かつd波の超伝導になることが予言されていたが、現象におこる2次元性を理論的に計算することにより、これまでにない新しい次元クロスオーバーが起こることと、それが実験をうまく説明することを示した。ほかにπ電子とd電子が1次元的かつ強磁性的に結合する系ではd電子の反強磁性相関のために長距離斥力ではじめて絶縁体になるという新しい現象を見出した。

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  • 分子性物質の電子理論

    Grant number:06243103  1996.4 - 1997.3

    文部省科学研究費補助金  重点領域研究(計画研究)  重点領域研究  東京大学

    永長 直人

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    有機導体における電子相関と電子格子相互作用の効果を理論的に明かにした。以下、より具体的に問題ごとに整理する。
    (1)準2次元導体の相図と超伝導:BEDT系の量子化学的な考察をおこない、種々のパラメータの元素依存性をあきらかにした。BEDT塩の多彩な電子相図を平均場近似の範囲内で少数のパラメーターで統一的に記述する論理を構築した。サイクロトロン周波数に対する電子間相互作用の効果を明かにした。また量子臨界現象の観点からd-波超伝導と反強磁性の間の相転移も調べられた。またTMTSF塩における磁場誘起SDW状態の強磁場下での異方的超伝導の理論を構築した。
    (2)準2次元導体の強磁場物性:TNTSF塩やBEDT塩に於ける磁場下での輸送現象につき、磁気貫通効果の定量的理論の構築や周期ポテンシャルの効果の研究などを行い、一次相転移現象や角度依存磁気抵抗などの実験をほぼ完全に説明した。
    (3)DCNQI塩の電子相関と金属-絶縁体転移:DCNQI塩において側鎖がIの系の示す複雑な相変化を第一原理バンド計算により研究し、2倍周期の不安定性を見いだした。またさらに進んで構造を最適化する計算まで着実に進歩させた。また繰り込み群を使って、電気抵抗等の温度変化を電子間相互作用と電子路子相互作用の両者を取り込んで解析し、実験をほぼ再現した。
    (4)1次元系の強相関効果:1次元電子系の研究では朝永-ラティンジャー流体とスピン-電荷分離が中心的なテーマである。dmit系などを意識して2バンドハバ-ド模型が超伝導の可能性を中心に検討され、またスピンギャップとその超伝導の関係も調べられた。一次元モット絶縁体の光スペクトルに現われる量子スピン系のダイナミックスが赤外、電荷移動吸収、光電子スペクトルの3者について調べられた。
    カーボン系:C_<60>の超伝導の理論をハバ-ド-ホルシュタイン模型に基づき構築した。カーボンナノチューブにおけるコンダクタンスが満たすスケーリング則を見いだした。

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  • 半充填近傍のスピンギャップと束縛対生成に対するフォノンの効果

    Grant number:08227205  1996.4 - 1997.3

    文部省科学研究費補助金  重点領域研究(公募研究)  重点領域研究  岡崎国立共同研究機構

    米満 賢治

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    Authorship:Principal investigator  Grant type:Competitive

    モット転移つまり電子相関の強い系における金属絶縁体転移としては、銅酸化物を含む反強磁性相関の強い2次元層状ペロブスカイト型化合物やマンガン酸化物を含む二重交換とヤーン・テラー効果で特徴づけられる3次元ペロブスカイト型化合物が脚光を浴びている。本研究ではそれと相補的な1次元の有機無機混成系(πd電子系)における金属絶縁体転移とそれに対する電子帯充填率と格子間隔の整合性、電子格子相互作用、低温での3次元性回復の効果を調べた。1次元電子系はフェルミ液体が不安定で金属状態では朝永ラティンジャー液体になっているので、電子相関が本質的である。また1次元電子系ではスケーリング則が成り立つために、解析的な繰込み群の方法が有効である。ここでは(DCNQI)_2M(M=Ag,Cu)のモット転移近傍の電子相と有限温度でのスケーリングの振る舞いを再現することに成功し、Sr_<14-x>Ca_xCu_<24>O_<41>の超伝導が起こる条件に関して考察を行った。前者の物質はM=Agのときには1/4フィリングなのに対し電荷密度波の周期は2であるし、M=Cuのときには1/6フィリングのバンドがあるのに電荷密度波の周期が3であることが確認されている。つまりバンド描像が成り立たない多体電子系でありかつ電子格子相互作用があるために結晶格子は低温で歪んでいる。M=Agのときにラディカルがメチル基であれば1次元性がよく、スピン電荷両者にギャップをもつ広義のスピンパイエルス状態になること、ラディカルがよう素であれば3次元性が無視できず、電荷のみにギャップがあく4k_F電荷密度波になること、そしてそれらの抵抗の温度依存性の定性的振る舞いの違いを、4k_Fフォノンとの結合をいれフォノンを量子的に扱うことで再現した。M=Cuのときは観測されるモット絶縁相を再現するのにやはり4k_Fフォノンとの結合と銅のd軌道の強い相関が必要なことがわかった。後者の物質では粒子粒子チャンネルと粒子正孔チャンネルの対数発散の均衡がとれないと、2鎖梯子系のd波的超伝導が不安定になることを示した。

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  • 低次元分子性導体の磁場誘起相と量子効果における幾何学的位相と電子相関

    Grant number:07232206  1995.4 - 1996.3

    文部省科学研究費補助金  重点領域研究(公募研究)  重点領域研究  東北大学

    米満 賢治

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    Authorship:Principal investigator  Grant type:Competitive

    最近研究されている分子性導体では電子相関の重要性を示唆するものが多い。カッパ型のBEDT塩は電子間斥力が大きく、実質的にハーフ・フィリングとなって金属絶縁体転移を起こすことが指摘されている。この系は2次元でありフェルミ面のネスティングは弱いが、ウムクラップ過程を考慮した金属絶縁体転移をさらに研究する必要性を示している。DCNQI系は1/3フィルドだが1次元性が強く金属絶縁体転移とともに格子の歪みと磁性の変化が現れている。動的な格子の歪みと金属絶縁体転移の関連をさらに追求すべきである。本研究ではこれらの系を研究する上で有用なボゾン化の方法を拡張うる第一歩として、1次元電子系に動的なフォノンとの結合を加えて、繰り込み群の方程式を導出した。相互作用のうち金属絶縁体転移を起こすのに必要なウムクラップ過程を、ハーフ・フィリングからずれているときも有限のエネルギー・スケールで取り入れる。2次元古典系ではクーロン・ガスを拡張したバーガーズ・ベクトル系と同等になり、ベクトル間の相互作用は対数ポテンシャルと線型ポテンシャルが異方的に組み合わせられたものになる。不完全ガンマ関数やベッセル関数を用いると、解析的に方程式が導かれる。その数値積分により相関指数の固定点を求め、相図を得る。ハバ-ド・モデルにサイト・エネルギーを変化させる電子格子相互作用または転移成分を変化させるそれを加えたところ、ハーフ・フィリング付近ではどちらの場合も4つの相が可能なことが示された。それらは超伝導相関と密度波相関のどちらが優勢か、スピン・ギャップが形成されるか否かによって分類される。2つの電子格子相互作用はスピン・ギャップを開く傾向に大きな差があり、ハーフ・フィリング付近で顕著になる。

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  • モット転移近傍の準粒子の運動とホール伝導、非BCS超伝導及び幾何学的位相

    Grant number:07237205  1995.4 - 1996.3

    文部省科学研究費補助金  重点領域研究(公募研究)  重点領域研究  東北大学

    米満 賢治

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    Authorship:Principal investigator  Grant type:Competitive

    フィリングがハーフ・フィリングからずれることによって、反強磁性的絶縁相から超伝導相に変わる銅酸化物は、超伝導を示す手前のフィリングでスピン・ギャップを示す。超伝導がd波である可能性が高いので、絶縁相から超伝導相までの広い領域で、銅の3d軌道上の斥刃が明らかに大きく効いている。従って超伝導相近傍のスピン・ギャップは引力的相互作用を仮定して説明される通常の電子束縛状態とは異なった機構で生じている。本研究では、弱くても低エネルギー物性に大きく関わっている可能性のある電子格子相互作用を取り入れて、金属絶縁体転移及び超伝導相の近傍でスピン・ギャップが形成される可能性を示した。解析的な方法が可能な1次元系で、電子と格子の自由度をともにボゾン演算子で表すハミルトニアンを考える。1次元系では摂動論に対数発散が現れるが、それを無限に足しあわせたことに対応する繰り込み群を用いる。ボゾン表示では2次元古典系の繰り込み群に帰着する。フォノンがスピンと電荷を結合することと、ウムクラップ過程がハーフ・フィリング近傍で有限のエネルギー・スケールまで効いていることに注意して、繰り込み群の方程式を導いた。他のグループによる電子格子相互作用の繰り込みの方法の間違いを訂正し、反断熱極限を正しく再現する。上述のエネルギー・スケールが小さくなるハーフ.フィリング近傍でスピン相関は大きなフィリング依存性を示し、実際にスピン・ギャップ相が現れる。この相では電荷密度波相関が優勢であるが、電荷ギャップはなく金属的である。絶縁相はハーフ・フィリングでので現れる。フィリングをさらにずらすと、電子間斥力が優勢か電子格子相互作用が優勢かによりそれぞれ密度波相関が優勢なギャップレスの金属相がスピン・ギャップを伴う超伝導相のみが一般に現れることがわかった。

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  • Condensed Matter Theory of Low-Dimensional Molecular Materials

    Grant-in-Aid for Scientific Research 

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Intellectual property rights

  • 光スイッチ素子、光スイッチ装置、光通信システム及び光コンピュータ

    岩井 伸一郎,川上 洋平,天野 辰哉,大串 研也

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    Application no:PCT/JP2021/044368  Date applied:2021.12.2

    Announcement no:WO2022/124205  Date announced:2022.6.16

    Applicant (Organization):学校法人中央大学,国立大学法人東北大学

  • 光スイッチ素子、光スイッチ装置、光通信システム及び光コンピュータ

    岩井 伸一郎,川上 洋平,天野 辰哉,大串 研也

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    Application no:(DE) 11 2021 006 363.4  Date applied:2021.12.2

    Announcement no:DE112021006363T5  Date announced:2023.10.5

    Applicant (Organization):学校法人中央大学

  • 光スイッチ素子、光スイッチ装置、光通信システム及び光コンピュータ

    岩井 伸一郎,川上 洋平,天野 辰哉,大串 研也

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    Application no:(US) 18/265360  Date applied:2021.12.2

    Announcement no:(US)2024/0111181  Date announced:2024.4.4

    Applicant (Organization):学校法人中央大学

  • 光スイッチ素子、光スイッチ装置、光通信システム及び光コンピュータ

    岩井 伸一郎,川上 洋平,天野 辰哉,大串 研也

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    Application no:特願2022-568239  Date applied:2021.12.2

    Announcement no:WO2022/124205  Date announced:2022.6.16

    Applicant (Organization):学校法人中央大学

Teaching Experience

  • 固体物性理工学

  • 物理学第一特別講義7:低次元物質系の相転移ダイナミクス

  • 低次元分子性導体の物性理論

  • 特別講義III:低次元有機導体の物性理論

  • 低次元分子性固体の物性理論

  • 物性科学概論

  • 分子集団動力学

  • 数学演習

  • 数学B

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Committee Memberships

  • 2015.8 - 2017.7

    日本学術振興会   特別研究員等審査会専門委員及び国際事業委員会書面審査員  

  • 2006.3 - 2016.3

    Journal of the Physical Society of Japan   編集委員  

  • 2007.9 - 2013.8

    日本物理学会   第63期~第64期代議員  

  • 2011.5 - 2012.3

    日本物理学会   領域5(光物性分野)領域運営委員  

  • 2008.8 - 2011.3

    日本学術振興会   研究開発専門委員会「ナノ物質量子相の科学」委員  

  • 2008.8 - 2010.7

    日本学術振興会   特別研究員等審査会専門委員及び国際事業委員会書面審査員  

  • 2003.5 - 2004.4

    日本物理学会   領域7(分子性固体・有機導体分野)世話人  

  • 2000.9 - 2001.8

    日本物理学会   第56期代議員  

  • 1998.9 - 2000.8

    日本物理学会   名古屋支部委員  

  • 1998.9 - 1999.8

    日本物理学会   日本物理学会誌, 編集委員  

  • 1996.9 - 1997.8

    日本物理学会   名古屋支部委員  

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