Theory of Spectroscopies for Doped Mott Insulators

• Project/Area Number: 18340097
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyoto 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
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥12,310,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥810,000); Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2007: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2006: ¥8,800,000 (Direct Cost: ¥8,800,000)
• 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 / スペクトロスコピー

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

• [Journal Article] Low- temperature density matrix renormalization group using regulated polynomial expansion (2008)
  • Author(s): S. Sota and T. Tohyama
  • Journal Title: Physical Review B 78
  • Peer Reviewed
• [Journal Article] Enhancement of phonon effects in photoexcited states of one- dimensional Mott insulators (2008)
  • Author(s): H. Matsueda, A. Ando, T. Tohyama and S. Maekawa
  • Journal Title: Physical Review B 77
  • Peer Reviewed
• [Journal Article] Spectral properties of a hole coupled to optical phonons in the generalized t-J model (2008)
  • Author(s): J. Bonca, S. Maekawa T. Tohyama and P. Prelovsek
  • Journal Title: Physical Review B 77
  • Peer Reviewed
• [Journal Article] Temperature and Doping Dependence of the High-Energy Kink in Cuprates (2008)
  • Author(s): M. M. Zemljic, P. Prelovsek and T. Tohyama
  • Journal Title: Physical Review Letters 100
  • Peer Reviewed
• [Journal Article] Enhancement of phonon effects in photoexcited states of one-dimensional Mott insulators (2008)
  • Author(s): H. Matsueda, A. Ando, T. Tohyania, S. Maekawa
  • Journal Title: Physical Review B 77
  • Peer Reviewed
• [Journal Article] Low-temperature density matrix renomalization group using regulated polynomial expansion (2008)
  • Author(s): S. Sota, T. Tohyama
  • Journal Title: Physical Review B 78
  • Peer Reviewed
• [Journal Article] Effect of electron-phonon interaction on optical response in one-dimensional cuprates (2008)
  • Author(s): H. Matsueda, A. Ando, T. Tohyama, S. Maekawa
  • Journal Title: Journal of Physics and Cheiistry of Solids 69 Pages: 3070-3073
  • Peer Reviewed
• [Journal Article] Spectral function and dynamical spin correlation function in the t-t'-t''-J model (2008)
  • Author(s): T. Tohyama
  • Journal Title: Journal of Physics and Chemistry of Solids 69 Pages: 3176-3180
  • Peer Reviewed
• [Journal Article] Exact diagonalization study on nonmagnetic impurity effects in high-Tc superconductors (2008)
  • Author(s): K. Tsutsui, A. Toyama, T. Tohyaina, S. Maekawa
  • Journal Title: Journal of Physics and Cheiistry of Solids 69 Pages: 3365-3368
  • Peer Reviewed
• [Journal Article] Effect of electron-phonon interaction on optical response in one-dimensional cuprates (2008)
  • Author(s): H. Matsueda, T. Tohyama
  • Journal Title: Progress of Theoretical Physics Supplement 176 Pages: 165-181
  • 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
  • Peer Reviewed
• [Journal Article] Numerical approach to the low-doping regime of the t-J model (2007)
  • Author(s): J. Bonca, S. Maekawa and T. Tohyama
  • Journal Title: Physical Review B 76
  • Peer Reviewed
• [Journal Article] Fermi surface and pseudogap of electron-doped cuprate super- conductors : Numerical study of the t-t -J model (2007)
  • Author(s): M. M. Zemljic, P. Prelovsek and T. Tohyama
  • Journal Title: Physical Review B 76
  • Peer Reviewed
• [Journal Article] Dynamical Mean Field Theory Study of the Linear and Nonlinear Optics of Kondo Systems (2007)
  • Author(s): S. A. Jafari, T. Tohyama and S. Maekawa
  • Journal Title: Journal of the Physical Society of Japan 76
  • NAID: 110006278060
  • Peer Reviewed
• [Journal Article] Fermi surface and pseudogap of electron-doped cuprate superconductors: Numerical study of the t-t -J model (2007)
  • Author(s): M. M. Zemljlc, P. Prelovsek and T. Tohyama
  • Journal Title: Physical Review B 76
  • Peer Reviewed
• [Journal Article] Momentum-dependent charge excitations of a two-leg ladder: Resonant inelastic x-ray scattering of (La, Sr, Ca)_14Cu_24O_41 (2007)
  • Author(s): K. Ishii, K. Tsutsui, T. Tohyama, 他8名
  • Journal Title: Physical Review B 76
  • Peer Reviewed
• [Journal Article] Symmetry of magnetic excitons in two-dimensional Mottinsulators (2007)
  • Author(s): T. Tohyama
  • Journal Title: Journal of Magnetism and Magnetic Materials 310
  • Peer Reviewed
• [Journal Article] Effect of Kondo resonance on optical third harmonic generation (2007)
  • Author(s): S. A. Jafari, T. Tohyama, and S. Maekawa
  • Journal Title: Journal of Magnetism and Magnetic Materials 310 Pages: 960-962
  • Peer Reviewed
• [Journal Article] Effect of electron-phonon coupling on spin-charge separation in one-dimensional strongly correlated electron systems (2007)
  • Author(s): H. Matsueda, T. Tohyama, and S. Maekawa
  • Journal Title: Journal of Magnetism and Magnetic Materials 310 Pages: 975-977
  • Peer Reviewed
• [Journal Article] Charge excitations and resonant inelastic X-ray scattering in ladder cuprates (2007)
  • Author(s): K. Tsutsui, T. Tohyama, and S. Maekawa
  • Journal Title: Physica C 460-462 Pages: 969-970
  • Peer Reviewed
• [Journal Article] Spin, charge, and electronic excitations in cuprate superconductors: Role of the long-range hoppings (2007)
  • Author(s): T. Tohyama
  • Journal Title: Physica C 460-462 Pages: 1006-1007
  • Peer Reviewed
• [Journal Article] Effect of frustration on optical conductivity in a two-dimensional triangular Hubbard model near half filling (2007)
  • Author(s): T.Tohyama
  • Journal Title: Journal of Physics : Condensed Matter 19 Pages: 145287-145287
• [Journal Article] Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators (2006)
  • Author(s): H. Matsueda, T. Tohyama and S. Maekawa
  • Journal Title: Physical Review B 74
  • Peer Reviewed
• [Journal Article] Anomalous temperature dependence of the single-particle spectrum in the organic conductor TTF-TCNQ (2006)
  • Author(s): N. Bulut, H. Matsueda, T. Tohyama and S. Maekawa
  • Journal Title: Physical Review B 74
  • Peer Reviewed
• [Journal Article] Effect of frustration on charge dynamics for a doped two-dimensional triangular Hubbard lattice (2006)
  • Author(s): T. Tohyama
  • Journal Title: Physical Review B 74
  • Peer Reviewed
• [Journal Article] Effect of frustration on charge dynamics for a doped two-dimensional triangular Hubbard lattice (2006)
  • Author(s): T.Tohyama
  • Journal Title: Physical review B 74 Pages: 113108-113108
• [Journal Article] Anomalous temperature dependence of the single-particle spectrum in the organic conductor TTF-TCNQ (2006)
  • Author(s): N.Bulut, H.Matsueda, T.Tohyama, S.Maekawa
  • Journal Title: Physical review B 74 Pages: 113106-113106
• [Journal Article] Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators (2006)
  • Author(s): H.Matsueda, T.Tohyama, S.Maekawa
  • Journal Title: Physical review B 74 Pages: 241103-241103
• [Journal Article] Dynamical Mean Field Theory of Optical Third Harmonic Generation (2006)
  • Author(s): S.A.Jafari, T.Tohyama, S.Maekawa
  • Journal Title: Journal of the Physical Society of Japan 75 Pages: 83706-83706
  • NAID: 110004799193
• [Journal Article] Theory of Cu L-edge resonant inelastic X-ray scattering in insulating cuprates (2006)
  • Author(s): K.Tsutsui, H.Yamamoto, T.Tohyama, S.Maekawa
  • Journal Title: Journal of Physics and Chemistry of Solids 67 Pages: 274-274
• [Presentation] 多層型強相関電子系における秩序状態 (2009)
  • Author(s): 遠山貴巳
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-29
• [Presentation] ニッケル酸化物の電荷励起と共鳴非弾性X線散乱 (2009)
  • Author(s): 筒井健二
  • Organizer: 日本物理学会第64回年次大会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] Dynamical DMRG study of one-dimensional Hubbard-Holstein model (2009)
  • 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] Dynamical DMRG study of one-diiensional Hubbard-Holstein model (2009)
  • Author(s): T. Tohyama
  • Organizer: International Workshop on "Supercomputing in Solid state Physics 2009"
  • 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] strong Correlation Effects in Cuprates as Evidenced from Single-Particle and Charge Excitations (2008)
  • Author(s): T. Tohyama
  • Organizer: International Workshop on "Inelastic Neutron and X-Ray Scattering in strongly Correlated Electron Systems"
  • Place of Presentation: Tohoku Univ.
  • Year and Date: 2008-10-02
• [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] 一次元モット絶縁体の光吸収に対する電子・格子相互作用の効果II (2008)
  • Author(s): 松枝宏明
  • 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 Cuprates (2008)
  • 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 and Charge Dynamics in Cuprates (2008)
  • Author(s): T. Tohyama
  • Organizer: The 12th APCTP Winter Workshop on Strongly Correlated Electron Systems
  • Place of Presentation: ポハン
  • Year and Date: 2008-01-20
• [Presentation] Optical response and electron-phonon interaction in one-dimensional Mott insulators (2007)
  • Author(s): T. Tohyama
  • Organizer: Yukawa International Seminar 2007 "Interaction and Nanostructural Effects in Low-Dimensional Systems"
  • Place of Presentation: 京都
  • Year and Date: 2007-11-06
• [Presentation] Temperature and Doping Dependence of High-energy Kiuk in Cuprates (2007)
  • Author(s): T. Tohyama
  • Organizer: International Symposium on Lattice Effects in Cuprate High Temperature Superconductors
  • Place of Presentation: つくば
  • Year and Date: 2007-11-03
• [Presentation] 高温超伝導体における高エネルギーキンクの起源と光学応答 (2007)
  • Author(s): 遠山貴巳
  • Organizer: 日本物理学会第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] RIXS, Charge Response Function in Cuprates (2007)
  • 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] RIXS and Charge Response Function in Cuprates (2007)
  • 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] Single-praticle and two-particle excitations of the t-t'-t" -J mode1 (2007)
  • Author(s): T. Tohyama
  • Organizer: International Seminar and workshop "Strong Correlations and Angle-Resolved Photoemission Spectroscopy"
  • Place of Presentation: ドレスデン
  • Year and Date: 2007-04-25
• [Presentation] Resonant Inelastic x-ray scattering in cuprates (2007)
  • 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] Resonant Inelastic x-ray scattering in cuprates (2007)
  • Author(s): T. Tohyama
  • Organizer: International Seminar and workshop "Strong Correlations and Angle-Resolved Photoemission Spectroscopy"
  • Place of Presentation: ドレスデン
  • Year and Date: 2007-04-18
• [Presentation] Momentum-Dependent Charge Dynamics in High-Tc Cuprates (2006)
  • Author(s): T. Tohyama
  • Organizer: International Conference on Stripes (STRIPES2006)
  • Place of Presentation: Roma
  • Year and Date: 2006-12-22