TAKAHASHI Akira

写真a

Affiliation Department etc.

Department of Physical Science and Engineering
Department of Physical Science and Engineering

Title

Professor

Mail Address

E-mail address

External Career

  • 2007.04
    -
    2011.03

      Associate Professor  

  • 1999.04
    -
    2007.03

      Associate Professor (as old post name)  

  • 1996.04
    -
    1999.03

      Associate Professor (as old post name)  

  • 1995.04
    -
    1996.03

      Associate Professor (as old post name)  

  • 1990.04
    -
    1995.03

      Lecturer  

 

Research Career

  • photoinduced phase transition

    Individual   JST Basic Research Programs (Core Research for Evolutional Science and Technology :CREST)  

    Project Year:  2002  -  Now

Thesis for a degree

  • Exact periodic solutions in the continuum models of polyacetylene

    Akira Takahashi 

      1989.03

    8   1

Papers

  • Ultrafast polarization control in κ-(BEDT-TTF)2X

    Shu Ohmura, Jun Tokimoto, and Akira Takahashi

    PHYSICAL REVIEW B   104   134302   2021.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Effective model of one-dimensional extended Hubbard systems: Application to linear optical spectrum calculations in large systems based on many-bodyWannier functions

    S. Ohmura, A. Takahashi, K. Iwano, T. Yamaguchi, K. Shinjo, T. Tohyama, S. Sota, and H. Okamoto

    PHYSICAL REVIEW B   100   235134   2019.12  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Nonadiabatic quantum fluctuations in the neutral ground state of tetrathiafulvalene-p-chloranil

    Yuko Watanabe, Hideo Ando, Akira Takahashi, Norikazu Tomita

    PHYSICAL REVIEW B   100   205205   2019.11  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Terahertz pulse induced transitions between ionic and neutral phases and electronic polarization reversal in TTF-CA

    Shu Ohmura, Tomohito Mase, Akira Takahashi

    PHYSICAL REVIEW B   100   035116   2019.07  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Metallic states induced by quantum lattice fluctuations

    Norikazu Tomita, Akira Takahashi

    PHYSICAL REVIEW B   99   035203   2019.01  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Charge and dielectric response to THz pulse in the charge ordered phase of α-(BEDT-TTF)2I3

    Shinnosuke Kuniki, Shu Ohmura, Akira Takahashi

    PHYSICAL REVIEW B   98   165149   2018.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Photoinduced transition to charge-ordered phases from dynamical localization in the metallic phase of α-(BEDT-TTF)2I3

    Koudai Oya, Akira Takahashi

    PHYSICAL REVIEW B   97   115147   2018.03  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Instantaneous charge and dielectric response to terahertz pulse excitation in TTF-CA

    Hiroki Gomi, Naoto Yamagishi, Tomohito Mase, Takeshi J. Inagaki, and Akira Takahashi,

    PHYSICAL REVIEW B   95   094116   2017.03  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Ferroelectric charge order enhanced by magnetic frustration in dimer Mott insulators

    Hiroki Gomi, Takeshi J. Inagaki, Akira Takahashi

    PHYSICAL REVIEW B   93   035105   2016.01  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Quantum Lattice Fluctuations in the Charge Density Wave State beyond the Adiabatic Approximation

    Keisuke Shida, Yuko Watanabe, Hiroki Gomi, Akira Takahashi, Norikazu Tomita

    Journal of the Physical Society of Japan   84   124803   2015.11  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

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Review Papers

  • An Effective Model for the One-Dimensional Extended Hubbard Model Applicable to Linear Optical Spectrum Calculations in Large Systems: A New Approach Based on Many-Body Wannier Functions

    Shu Ohmura, Akira Takahashi, Kaoru Iwano, Tokitake Yamaguchi, Kazuya Shinjo, Takami Tohyama, Shigetoshi Sota, Hiroshi Okamoto

    Photon Factory Highlights 2019     2020.11

    Introduction and explanation (bulletin of university, research institution)   Single Author

  • soliton lattice

      26   61 - 70   1991.01

    Introduction and explanation (scientific journal)   Single Author

Presentations

  • Neutral-ionic phase transitions and ultrafast control of electronic polarization induced by THz pulse in TTF-CA

    A. Takahashi and S. Ohmura

    Photoinduced Phase Transitions and Cooperative Phenomena  2021.11  -  2021.11 

  • Ultrabosonic and subbosonic behaviors in photoexcited one-dimensional Mott insulators

    K. Iwano, T. Yamaguchi, S. Ohmura, A. Takahashi, and H. Okamoto

    Photoinduced Phase Transitions and Cooperative Phenomena   2021.11  -  2021.11 

  • Ultrafast control of polarization in kappa-(BEDT-TTF)2X by photoinduced phase transition

    S. Ohmura and A. Takahashi

    Photoinduced Phase Transitions and Cooperative Phenomena  2021.11  -  2021.11 

  • Ultrafast control of polarization by terahertz pulse in electronic ferroelectrics

    Akira Takahashi  [Invited]

    4th EMN Terahertz 2019  2019.06  -  2019.06 

  • THz pulse induced polarization reversal and neutral-ionic phase transition in TTF-CA

    Akira Takahashi, Shu Ohmura

    The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018)  2018.07  -  2018.07 

  • Off-resonant-light-induced quantum phase transition and ultrafast polarization control in BEDT-TTF salts

    Shu Ohmura, Akira Takahashi

    The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials (EXCON 2018)  2018.07  -  2018.07 

  • Photoinduced metal-insulator transition due to dynamical localization in a-type and k-type BEDT-TTF salts

    K. Oya, H. Gomi, A. Takahashi

    international conferences on photoinduced phase transitions   2017.06  -  2017.06 

  • THz pulse induced dynamics in charge ordered phase of a-(BEDT-TTF)2I3

    S. Kuniki, H. Gomi, and A. Takahashi

    2016.03  -  2016.03 

  • Control of photoinduced charge ordered phase in a-(BEDT-TTF)2I3

    K. Oya, H. Gomi, and A. Takahashi

    2016.03  -  2016.03 

  • Quantum fluctuation of ionic domain in the neutral phase of TTF-CA

    Y. Watanabe, H. Andou, H. Gomi, A. Takahashi, N. Tomita

    2016.03  -  2016.03 

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