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2008 Fiscal Year Final Research Report

Theory of Spectroscopies for Doped Mott Insulators

Research Project

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Project/Area Number 18340097
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionKyoto University

Principal Investigator

TOHYAMA Takami  Kyoto University, 基礎物理学研究所, 教授 (70237056)

Co-Investigator(Kenkyū-buntansha) TSUTSUI Kenji  日本原子力研究開発機構, 量子ビーム応用部門, 副主任研究員 (80291011)
MATSUEDA Hiroaki  仙台電波工業専門学校, 助教 (20396518)
Project Period (FY) 2006 – 2008
Keywords強相関電子系 / スペクトロスコピ- / 厳密対角化法 / 密度行列繰り込み群法
Research Abstract

固体中の電子間に働くクーロン相互作用が強い系では、光を用いた各種のスペクトロスコピーがその物性研究に威力を発揮している.本グループが開発・発展させている多体電子系に対する数値計算法を用いて、銅酸化物に対する共鳴非弾性X線散乱スペクトル、光学伝導度スペクトル、角度分解光電子分光スペクトルなどを計算し、電子のもつ電荷及びスピンの自由度がスペクトロスコピーに及ぼす効果や電子状態に果たす役割を解明した.

  • Research Products

    (18 results)

All 2009 2008 2007 2006

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (8 results)

  • [Journal Article] Low- temperature density matrix renormalization group using regulated polynomial expansion2008

    • Author(s)
      S. Sota and T. Tohyama
    • Journal Title

      Physical Review B 78

      Pages: 113101(1-4)

    • Peer Reviewed
  • [Journal Article] Enhancement of phonon effects in photoexcited states of one- dimensional Mott insulators2008

    • Author(s)
      H. Matsueda, A. Ando, T. Tohyama and S. Maekawa
    • Journal Title

      Physical Review B 77

      Pages: 193112(1-4)

    • Peer Reviewed
  • [Journal Article] Spectral properties of a hole coupled to optical phonons in the generalized t-J model2008

    • Author(s)
      J. Bonca, S. Maekawa T. Tohyama and P. Prelovsek
    • Journal Title

      Physical Review B 77

      Pages: 0054519(1-6)

    • Peer Reviewed
  • [Journal Article] Temperature and Doping Dependence of the High-Energy Kink in Cuprates2008

    • Author(s)
      M. M. Zemljic, P. Prelovsek and T. Tohyama
    • Journal Title

      Physical Review Letters 100

      Pages: 036402(1-4)

    • Peer Reviewed
  • [Journal Article] Momentum-dependent charge excitations of a two-leg ladder : Resonant inelastic x-ray scattering of (La, Sr, Ca)_<14>Cu_<24>O_<41>2007

    • Author(s)
      K. Ishii, K. Tsutsui and T. Tohyama
    • Journal Title

      Physical Review B 76

      Pages: 045124(1-7)

    • Peer Reviewed
  • [Journal Article] Numerical approach to the low-doping regime of the t-J model2007

    • Author(s)
      J. Bonca, S. Maekawa and T. Tohyama
    • Journal Title

      Physical Review B 76

      Pages: 031521(1-6)

    • Peer Reviewed
  • [Journal Article] Fermi surface and pseudogap of electron-doped cuprate super- conductors : Numerical study of the t-t -J model2007

    • Author(s)
      M. M. Zemljic, P. Prelovsek and T. Tohyama
    • Journal Title

      Physical Review B 76

      Pages: 044706(1-4)

    • Peer Reviewed
  • [Journal Article] Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators2006

    • Author(s)
      H. Matsueda, T. Tohyama and S. Maekawa
    • Journal Title

      Physical Review B 74

      Pages: 241103(R)(1-4)

    • Peer Reviewed
  • [Journal Article] Anomalous temperature dependence of the single-particle spectrum in the organic conductor TTF-TCNQ2006

    • Author(s)
      N. Bulut, H. Matsueda, T. Tohyama and S. Maekawa
    • Journal Title

      Physical Review B 74

      Pages: 113106 (1-4)

    • Peer Reviewed
  • [Journal Article] Effect of frustration on charge dynamics for a doped two-dimensional triangular Hubbard lattice2006

    • Author(s)
      T. Tohyama
    • Journal Title

      Physical Review B 74

      Pages: 113108 (1-4)

    • Peer Reviewed
  • [Presentation] Dynamical DMRG study of one-dimensional Hubbard-Holstein model2009

    • Author(s)
      T. Tohyama
    • Organizer
      International Workshop on "Inelastic Neutron and X-Ray Scattering in Strongly Correlated Electron Systems
    • Place of Presentation
      Univ. of Tokyo
    • Year and Date
      2009-02-18
  • [Presentation] 動的密度行列繰り込み群法の開発と電子・格子結合系への適用2009

    • Author(s)
      遠山貴巳
    • Organizer
      自然科学研究機構計算化学研究センタースーパーコンピューターワークショップ2009
    • Place of Presentation
      岡崎コンファレンスセンター
    • Year and Date
      2009-01-20
  • [Presentation] 一次元モット絶縁体の緩和ダイナミクスの研究2008

    • Author(s)
      松枝宏明
    • Organizer
      日本物理学会2008年秋季大会
    • Place of Presentation
      岩手大学
    • Year and Date
      2008-09-20
  • [Presentation] ドープされた二次元ニッケル酸化物の共鳴非弾性X線散乱と励起状態2008

    • Author(s)
      筒井健二
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学
    • Year and Date
      2008-03-26
  • [Presentation] RIXS and Charge Dynamics in Cuprates2008

    • Author(s)
      T. Tohyama
    • Organizer
      The 12th APCTP Winter Workshop on Strongly Correlated Electron Systems
    • Place of Presentation
      Pohang
    • Year and Date
      2008-01-20
  • [Presentation] RIXS, Charge Response Function in Cuprates2007

    • Author(s)
      T. Tohyama
    • Organizer
      6th International Conference on Inelastic X-ray Scattering
    • Place of Presentation
      淡路島
    • Year and Date
      2007-05-08
  • [Presentation] Resonant Inelastic x-ray scattering in cuprates2007

    • Author(s)
      T. Tohyama
    • Organizer
      International Seminar and Workshop "Strong Correlations and Angle-Resolved Photoemission Spectroscopy
    • Place of Presentation
      Dresden
    • Year and Date
      2007-04-18
  • [Presentation] Momentum-Dependent Charge Dynamics in High-Tc Cuprates2006

    • Author(s)
      T. Tohyama
    • Organizer
      International Conference on Stripes (STRIPES2006)
    • Place of Presentation
      Roma
    • Year and Date
      2006-12-22

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Published: 2010-06-10   Modified: 2016-04-21  

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