• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Theoretical perspectives on novel quantum phases generated by excitonic condensation

Research Project

Project/Area Number 17K05530
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionChiba University

Principal Investigator

Ohta Yukinori  千葉大学, 大学院理学研究院, 教授 (70168954)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords励起子絶縁体 / 励起子凝縮 / 強相関電子系 / 物性理論 / 遷移金属カルコゲナイド / コバルト酸化物 / スピン流 / 遷移金属化合物 / 遷移金属酸化物 / 変分クラスター近似
Outline of Final Research Achievements

Research on excitonic condensation in correlated electron systems is entering an era of explosive development. In the present study, we aim to deepen the theory of pair condensation mechanism of fermionic systems, which is in analogy with the theory of superconductivity. Comprehensively working on the study of three items of spin-singlet excitonic systems, spin-triplet excitonic systems, and spin-orbit coupled systems, we obtained some important research results such as elucidating the anomalous normal state in Ta2NiSe5 in the spin-singlet excitonic system, magnetic multipole order, spin current, and k-space spin texture in the spin-triplet exciter system. We believe that such results have a great spillover effect that transcends the boundaries of fields in the study of quantum condensation in, e.g., heavy fermion materials, semiconductor double layer systems, and ultracold atomic systems.

Academic Significance and Societal Importance of the Research Achievements

相関電子系における励起子凝縮(電子と正孔の対凝縮)の問題は、超伝導(電子と電子の対凝縮)と並ぶ、フェルミオン系における対凝縮機構の解明という、基礎科学としての物理学分野において大きな学術的意義を有する問題である。超伝導が応用可能性の観点から大き社会的意義を持つことを鑑みれば、そのカウンターパートとしての励起子凝縮研究も幾ばくかの社会的意義を持ち得よう。特に本研究は、現実に存在する物質に関して励起子凝縮の可能性を解明するものであり、従ってそこで得られた研究成果は、大きな学術的意義および社会的意義を持つと期待される。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (105 results)

All 2022 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (9 results) Journal Article (26 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 26 results,  Open Access: 6 results) Presentation (66 results) (of which Int'l Joint Research: 25 results,  Invited: 2 results) Remarks (4 results)

  • [Int'l Joint Research] IFW Dresden/TU Dresden/Max Planck Institute(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Indian Institute of Science(インド)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] IFW-Dresden/TU-Dresden/Univ. Greifswald(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Columbia Univ.(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] IFW-Dresden/TU-Dresden(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Sapienza University of Rome(イタリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Greifswald/IFW-Dresden/TU-Dresden(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Oxford(英国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of Greifswald/IFW-Dresden(Germany)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Charge-ordered state satisfying the Anderson condition in LiRh2O4 arising from local dimer order2022

    • Author(s)
      Shiomi M.、Kojima K.、Katayama N.、Maeda S.、Schneeloch J. A.、Yamamoto S.、Sugimoto K.、Ohta Y.、Louca D.、Okamoto Y.、Sawa H.
    • Journal Title

      Physical Review B

      Volume: 105 Issue: 4 Pages: 1-5

    • DOI

      10.1103/physrevb.105.l041103

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anomalous fractional quantization in the kagomelike Heisenberg ladder: Emergence of the effective spin-1 chain2021

    • Author(s)
      Yamaguchi Tomoki、Ohta Yukinori、Nishimoto Satoshi
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 18

    • DOI

      10.1103/physrevb.103.184410

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hybridization-Gap Formation and Superconductivity in the Pressure-Induced Semimetallic Phase of the Excitonic Insulator Ta2NiSe52021

    • Author(s)
      Matsubayashi K、Okamura H、Mizokawa T、Katayama N、Nakano A、Sawa H、Kaneko T、Toriyama T、Konishi T、Ohta Y、Arima H、Yamanaka R、Hisada A、Okada T、Ikemoto Y、Moriwaki T、Munakata K、Nakao A、Nohara M、Lu Y、Takagi H、Uwatoko Y
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 7 Pages: 074706-074706

    • DOI

      10.7566/jpsj.90.074706

    • NAID

      40022620524

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Third-harmonic generation in excitonic insulators2021

    • Author(s)
      Tanabe Tetsuhiro、Kaneko Tatsuya、Ohta Yukinori
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 24

    • DOI

      10.1103/physrevb.104.245103

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin-S impurities with XXZ anisotropy in a spin-1/2 Heisenberg chain2021

    • Author(s)
      Singhania Ayushi、Kadosawa Masahiro、Ohta Yukinori、Kumar Sanjeev、Nishimoto Satoshi
    • Journal Title

      Physical Review B

      Volume: 104 Issue: 22

    • DOI

      10.1103/physrevb.104.224407

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Slow dynamics of disordered zigzag chain molecules in layered LiVS2 under electron irradiation2021

    • Author(s)
      Katayama Naoyuki、Kojima Keita、Yamaguchi Tomoki、Hattori Sosuke、Tamura Shinya、Ohara Koji、Kobayashi Shintaro、Sugimoto Koudai、Ohta Yukinori、Saitoh Koh、Sawa Hiroshi
    • Journal Title

      npj Quantum Materials

      Volume: 6 Issue: 1 Pages: 16-16

    • DOI

      10.1038/s41535-021-00313-w

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Light-induced switching of magnetic order in the anisotropic triangular-lattice Hubbard model2021

    • Author(s)
      Hayato Kobayashi, Ryo Fujiuchi, Koudai Sugimoto, Yukinori Ohta
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 16

    • DOI

      10.1103/physrevb.103.l161106

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Finite-Temperature Properties of Excitonic Condensation in the Extended Falicov-Kimball Model: Cluster Mean-Field-Theory Approach2020

    • Author(s)
      Kadosawa Masahiro、Nishimoto Satoshi、Sugimoto Koudai、Ohta Yukinori
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 5 Pages: 053706-053706

    • DOI

      10.7566/jpsj.89.053706

    • NAID

      40022226542

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Emergence of pure spin current in doped excitonic magnets2020

    • Author(s)
      Yamamoto Shunsuke、Sugimoto Koudai、Ohta Yukinori
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 17 Pages: 174428-174428

    • DOI

      10.1103/physrevb.101.174428

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Superconductivity and charge density wave under a time-dependent periodic field in the one-dimensional attractive Hubbard model2020

    • Author(s)
      Fujiuchi Ryo、Kaneko Tatsuya、Sugimoto Koudai、Yunoki Seiji、Ohta Yukinori
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 23 Pages: 235122-235122

    • DOI

      10.1103/physrevb.101.235122

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Robust atomic orbital in the cluster magnet LiMoO22020

    • Author(s)
      Katayama N.、Takeda H.、Yamaguchi T.、Yamada Y.、Iida K.、Takigawa M.、Ohta Y.、Sawa H.
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 8

    • DOI

      10.1103/physrevb.102.081106

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Typicality-Based Variational Cluster Approach to Thermodynamic Properties of the Hubbard Model2020

    • Author(s)
      Hisao Nishida、Ryo Fujiuchi、Koudai Sugimoto、Yukinori Ohta
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 2 Pages: 023702-023702

    • DOI

      10.7566/jpsj.89.023702

    • NAID

      40022155038

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Variety of order-by-disorder phases in the asymmetric J1-J2 zigzag ladder: From the delta chain to the J1-J2 chain2020

    • Author(s)
      Tomoki Yamaguchi、Stefan-Ludwig Drechsler、Yukinori Ohtai、Satoshi Nishimoto
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 10

    • DOI

      10.1103/physrevb.101.104407

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Observation of a Novel Phase Transition in Sr7Re4O192020

    • Author(s)
      Yutaka Ueda, Mina Murase, Yoshiaki Kobayashi, Masayuki Itoh, Takeshi Yajima, Tomoki Yamaguchi, Ryo Takahashi, Koudai Sugimoto, Yukinori Ohta
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 5 Pages: 054703-054703

    • DOI

      10.7566/jpsj.89.054703

    • NAID

      210000158155

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Observation of metal to nonmagnetic insulator transition in polycrystalline RuP by photoemission spectroscopy2020

    • Author(s)
      Daiki Ootsuki, Kei Sawada, Hiroki Goto, Daigorou Hirai, Daisuke Shibata, Masato Kawamoto, Akira Yasui, Eiji Ikenaga, Masashi Arita, Hirofumi Namatame, Masaki Taniguchi, Tatsuya Toriyama, Takehisa Konishi, Yukinori Ohta, Naurang L. Saini, Teppei Yoshida, Takashi Mizokawa, Hidenori Takagi
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 16

    • DOI

      10.1103/physrevb.101.165113

    • NAID

      130007735606

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pressure-Induced Restoration of the Reversed Crystal-Field Splitting in α-Sr2CrO42020

    • Author(s)
      Ryo Takahashi、Tomoki Yamaguchi、Koudai Sugimoto、Touru Yamauchi、Hiroya Sakurai、Yukinori Ohta
    • Journal Title

      JPS Conference Proceedings

      Volume: 30 Pages: 011026-011026

    • DOI

      10.7566/jpscp.30.011026

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photoinduced electron-electron pairing in the extended Falicov-Kimball model2019

    • Author(s)
      Ryo Fujiuchi、Tatsuya Kaneko、Yukinori Ohta、Seiji Yunoki
    • Journal Title

      Physical Review B

      Volume: 100 Issue: 4 Pages: 045121-045121

    • DOI

      10.1103/physrevb.100.045121

    • NAID

      130008146666

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin texture and spin current in excitonic phases of the two-band Hubbard model2019

    • Author(s)
      Nishida Hisao, Miyakoshi Shohei, Kaneko Tatsuya, Sugimoto Koudai, Ohta Yukinori
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 3

    • DOI

      10.1103/physrevb.99.035119

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Exciton-phonon cooperative mechanism of the triple-q charge-density-wave and antiferroelectric electron polarization in TiSe22018

    • Author(s)
      Kaneko Tatsuya, Ohta Yukinori, Yunoki Seiji
    • Journal Title

      Physical Review B

      Volume: 97 Issue: 15

    • DOI

      10.1103/physrevb.97.155131

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Excitonic Order and Superconductivity in the Two-Orbital Hubbard Model: Variational Cluster Approach2018

    • Author(s)
      Fujiuchi Ryo, Sugimoto Koudai, Ohta Yukinori
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 6 Pages: 063705-063705

    • DOI

      10.7566/jpsj.87.063705

    • NAID

      210000134848

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Strong Coupling Nature of the Excitonic Insulator State in Ta2NiSe52018

    • Author(s)
      Sugimoto Koudai, Nishimoto Satoshi, Kaneko Tatsuya, Ohta Yukinori
    • Journal Title

      Physical Review Letters

      Volume: 120 Issue: 24

    • DOI

      10.1103/physrevlett.120.247602

    • NAID

      130007735297

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Large entropy change derived from orbitally assisted three-centered two-electron σ bond formation in metallic Li0.33VS22018

    • Author(s)
      Katayama N., Tamura S., Yamaguchi T., Sugimoto K., Iida K., Matsukawa T., Hoshikawa A., Ishigaki T., Kobayashi S., Ohta Y., Sawa H.
    • Journal Title

      Physical Review B

      Volume: 98 Issue: 8

    • DOI

      10.1103/physrevb.98.081104

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Exotic criticality in the dimerized spin-1 XXZ chain with single-ion anisotropy2018

    • Author(s)
      Ejima Satoshi, Yamaguchi Tomoki, Essler Fabian, Lange Florian, Ohta Yukinori, Fehske Holger
    • Journal Title

      SciPost Physics

      Volume: 5 Issue: 6

    • DOI

      10.21468/scipostphys.5.6.059

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nonequilibrium dynamics in the pump-probe spectroscopy of excitonic insulators2018

    • Author(s)
      Tanabe Tetsuhiro, Sugimoto Koudai, Ohta Yukinori
    • Journal Title

      Physical Review B

      Volume: 98 Issue: 23

    • DOI

      10.1103/physrevb.98.235127

    • NAID

      130007734707

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ferromagnetic Peierls insulator state in AMg4Mn6O15 (A=K,Rb,Cs)2018

    • Author(s)
      T. Yamaguchi, K. Sugimoto, Y. Ohta, Y. Tanaka, H. Sato
    • Journal Title

      Physical Review B

      Volume: 97 Issue: 16

    • DOI

      10.1103/physrevb.97.161103

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multipole ordering and collective excitations in the excitonic phase of Pr0.5Ca0.5CoO32017

    • Author(s)
      Yamaguchi Tomoki, Sugimoto Koudai, Ohta Yukinori
    • Journal Title

      Physica B

      Volume: 921 Pages: 37-39

    • DOI

      10.1016/j.physb.2017.08.020

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 拡張ハバード模型における高次高調波発生:モット絶縁体における励起子効果2022

    • Author(s)
      鵜殿美奈, 杉本高大, 金子竜也, 太田幸則
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] スパイラル境界条件を用いた2次元ハイゼンベルク模型の自発磁化の計算2022

    • Author(s)
      廉澤誠大, 太田幸則, 中村正明, 西本理
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] スピン1/2ハイゼンベルク鎖における異方的スピンS不純物の効果2021

    • Author(s)
      廉澤誠大, 太田幸則, Satoshi Nishimoto, Ayushi Singhania, Sanjeev Kumar
    • Organizer
      日本物理学会2021年春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 励起子絶縁体における三次高調波発生の理論的研究2021

    • Author(s)
      田辺哲寛, 金子竜也, 太田幸則
    • Organizer
      日本物理学会2021年春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 異方的三角格子ハバード模型における磁気秩序の光誘起スイッチング2021

    • Author(s)
      小林颯人, 藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2021年春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] モット絶縁体における高次高調波発生:サイト間相互作用の効果2021

    • Author(s)
      鵜殿美奈, 杉本高大, 金子竜也, 太田幸則
    • Organizer
      日本物理学会2021年春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Effect of spin-S impurities with XXZ anisotropy in the spin-1/2 Heisenberg chain2021

    • Author(s)
      Masahiro Kadosawa, Satoshi Nishimoto, Ayushi Singhania, Sanjeev Kumar
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2020&2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High harmonic generation in Mott insulatos: Effects of intersite interactions2021

    • Author(s)
      Mina UDONO, Koudai SUGIMOTO, Tatsuya KANEKO, Yukinori OHTA
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2020&2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theoretical study of third harmonic generation in excitonic insulators2021

    • Author(s)
      Tetsuhiro TANABE, Tatsuya KANEKO, Yukinori OHTA
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2020&2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Theory of collective-mode excitations in Ca2RuO42021

    • Author(s)
      Shunsuke YAMAMOTO, Koudai SUGIMOTO, and Yukinori OHTA
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2020&2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 拡張ハバード模型における光誘起d波超伝導相関2021

    • Author(s)
      鵜殿美奈, 藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 時間依存平均場近似を用いた励起子絶縁体における非線形光学応答の理論的研究2021

    • Author(s)
      田辺哲寛, 金子竜也, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 励起子磁性体Ca2RuO4の集団励起モードの理論2021

    • Author(s)
      山本峻介, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 密度行列繰込み群法における二次元格子系の拡張一次元格子系へのマッピングとサイズ外挿2021

    • Author(s)
      廉澤誠大, 太田幸則, 中村正明, 西本理
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Mean-field analysis of collective-mode excitations in excitonic magnet Ca2RuO42020

    • Author(s)
      Shunsuke Yamamoto, Koudai Sugimoto, Yukinori Ohta
    • Organizer
      APS March Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 低エネルギー逆光電子分光によるTa2NiSe5の伝導帯の直接観測2020

    • Author(s)
      川村啓太, 佐藤晴輝, 折尾響, 杉本高大, 太田幸則, 大槻太毅, 吉田鉄平, 丸岡うらら, 中埜彰俊, 寺崎一郎, 吉田弘幸
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 拡張Falicov-Kimball模型における励起子凝縮の有限温度クラスター平均場理論2020

    • Author(s)
      廉澤誠大, 西本理, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ドープされた励起子磁性相における純スピン流生成2020

    • Author(s)
      山本峻介, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ジグザグハイゼンベルグ鎖における非対称フラストレーション効果の研究2020

    • Author(s)
      山口伴紀, Stefan-Ludwig Drechsler, 太田幸則, 西本理
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Cluster mean-field analysis of the finite-temperature properties of the one-dimensional extended Falicov-Kimball model2020

    • Author(s)
      Masahiro Kadosawa, Satoshi Nishimoto, Koudai Sugimoto, Yukinori Ohta
    • Organizer
      APS March Meeting (virtual meeting)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Global Spin Current in Excitonic Phases of the Two-Band Hubbard Model2020

    • Author(s)
      Shunsuke Yamamoto, Hisao Nishida, Koudai Sugimoto, Yukinori Ohta
    • Organizer
      APS March Meeting (virtual meeting)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 1次元拡張Falicov-Kimball模型の有限温度クラスター平均場理論2020

    • Author(s)
      廉澤誠大, 西本理, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 2軌道ハバード模型の励起子相におけるグローバルスピン流2020

    • Author(s)
      山本峻介, 西田尚央, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] d-p模型によるTa2NiSe5の励起子絶縁体転移 II2020

    • Author(s)
      杉本高大, 太田幸則
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] The light-induced pairing of electrons in the extended Falicov-Kimball model2019

    • Author(s)
      Ryo Fujiuchi
    • Organizer
      New Generation in Strongly Correlated Electron Systems (NGSCES 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Strong Coupling Nature of the Excitonic Insulator State in Ta2NiSe52019

    • Author(s)
      Koudai Sugimoto
    • Organizer
      New Generation in Strongly Correlated Electron Systems (NGSCES 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Light-induced pairing correlations in the extended Falicov-Kimball model2019

    • Author(s)
      Ryo Fujiuchi
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pressure-Induced Restoration of the Reversed Crystal-Field Splitting in α-Sr2CrO42019

    • Author(s)
      Yukinori Ohta
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tricriticality in the dimerized spin-1 XXZ chain2019

    • Author(s)
      Tomoki Yamaguchi
    • Organizer
      International Conference on Strongly Correlated Electron Systems (SCES2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Theoretical perspectives on an excitonic insulator Ta2NiSe52019

    • Author(s)
      Yukinori Ohta
    • Organizer
      CCQ Quantum Cavities and Excitonic Insulators Workshop
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 異方的三角格子ハバード模型におけるスピン秩序の光誘起相転移2019

    • Author(s)
      小林颯人, 藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 外場印加による引力Hubbard模型の超伝導-電荷密度波相制御の理論2019

    • Author(s)
      藤内亮, 金子竜也, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] LiVS2のS-Se置換による短距離秩序構造の変化2019

    • Author(s)
      小島慶太, 山口伴紀, 塩見学, 片山尚幸, 太田幸則, 澤博
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] J1-J2鎖の非対称J2相互作用によるフェリ磁性-非整合周期SDW転移2019

    • Author(s)
      山口伴紀, 西本理, 太田幸則
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] S=1ダイマー化XXZ鎖における臨界性2019

    • Author(s)
      山口伴紀, 江島聡, F. H. L. Essler, F. Lange, 太田幸則, H. Fehske
    • Organizer
      日本物理学会代74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 拡張Falicov-Kimball模型における電子-電子ペアリングの光誘起2019

    • Author(s)
      藤内亮, 金子竜也, 柚木清司, 太田幸則
    • Organizer
      日本物理学会代74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] d-p模型によるTa2NiSe5の励起子絶縁体転移2019

    • Author(s)
      杉本高大, 太田幸則
    • Organizer
      日本物理学会代74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 有限温度変分クラスター法によるハバード模型の解析2019

    • Author(s)
      西田尚央, 藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会代74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Variational cluster approach to the excitonic condensation and superconductivity2018

    • Author(s)
      R. Fujiuchi, K. Sugimoto, Y. Ohta
    • Organizer
      International Conference on Magnetism (ICM2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Novel ferromagnetic Peierls insulators AMg4Mn6O15 (A = K, Rb, Cs)2018

    • Author(s)
      YAMAGUCHI Tomoki, SUGIMOTO Koudai, OHTA Yukinori, TANAKA Yudai, SATO Hirohiko
    • Organizer
      International Conference on Magnetism (ICM2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ferromagnetic Peierls Insulator State in AMg4Mn6O15 (A = K, Rb, Cs)2018

    • Author(s)
      Tomoki Yamaguchi
    • Organizer
      Correlated Electrons in Transition-Metal Compounds: New Challenges (MPIPKS, Dresden)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 励起子絶縁体のポンプ・プローブ分光による非平衡ダイナミクス2018

    • Author(s)
      田辺哲寛, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 拡張Falicov-Kimball模型における光誘起ダイナミクス2018

    • Author(s)
      藤内亮, 金子竜也, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] α-Sr2CrO4の高圧下電子状態2018

    • Author(s)
      高橋諒, 山口伴紀, 杉本高大, 山内徹, 櫻井裕也, 太田幸則
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 強結合型励起子絶縁体としてのTa2NiSe52018

    • Author(s)
      杉本高大, 西本理, 金子竜也, 太田幸則
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 変分クラスター近似による二軌道ハバード模型の励起子相と超伝導相2018

    • Author(s)
      藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 光電子分光によるRuPの金属-非磁性絶縁体転移の観測2018

    • Author(s)
      大槻太毅, 澤田慶, 柴田大輔, 川本雅人, 吉田鉄平, N. L. Saini, 溝川貴司, 後藤広樹, 小西健久, 太田幸則, 保井晃, 池永英司, 有田将司, 生天目博文, 谷口雅樹, 平井大悟郎, 高木英典
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] S=1ダイマー化XXZ鎖における3重臨界性2018

    • Author(s)
      山口伴紀, 江島聡, F. H. L. Essler, F. Lange, 太田幸則, H. Fehske
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 変分クラスター近似による励起子揺らぎを媒介とした超伝導発現の可能性2018

    • Author(s)
      藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 励起子相に誘起される局所スピン流:ブロッホの定理と対称性による考察2018

    • Author(s)
      西田尚央, 宮腰祥平, 金子竜也, 杉本高大, 太田幸則
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 層状Li0.33VS2における巨大なエントロピー変化を伴う構造相転移2018

    • Author(s)
      片山尚幸, 田村慎也, 山口伴紀, 杉本高大, 太田幸則, 澤博
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 強磁性パイエルス絶縁体としての新規マンガン酸化物AMg4Mn6O15 (A=K,Rb,Cs)2018

    • Author(s)
      山口伴紀, 杉本高大, 太田幸則, 田中雄大, 佐藤博彦
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Theoretical perspectives on a layered excitonic insulator Ta2NiSe52017

    • Author(s)
      Yukinori OHTA
    • Organizer
      European Materials Research Society 2017 Fall Meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] TiSe2の1粒子スペクトルと電荷密度分布2017

    • Author(s)
      金子竜也, 太田幸則, 柚木清司
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Ta2NiSe5の軌道間相互作用による絶縁化と光学伝導度2017

    • Author(s)
      杉本高大, 西本理, 金子竜也, 太田幸則
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 二軌道ハバード模型の励起子相におけるスピンテクスチャーとスピン流2017

    • Author(s)
      西田尚央, 宮腰祥平, 金子竜也, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 新規マンガン酸化物AMg4Mn6O15 (A=K,Rb,Cs)の電子状態2017

    • Author(s)
      山口伴紀, 杉本高大, 太田幸則, 田中雄大, 佐藤博彦
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 変分クラスター近似による二軌道系の超伝導2017

    • Author(s)
      藤内亮, 杉本高大, 太田幸則
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Superconductivity mediated by excitonic fluctuations: Variational cluster approach2017

    • Author(s)
      R. Fujiuchi, K. Sugimoto, Y. Ohta
    • Organizer
      The 28th Intgernatipnal Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Global spin current and spin texture in the excitonic phase of the triangular-lattice Hubbard model2017

    • Author(s)
      H. NISHIDA, S. MIYAKOSHI, Y. OHTA
    • Organizer
      The 28th Intgernatipnal Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Theoretical analysis of optical conductivity in Ta2NiSe52017

    • Author(s)
      K. Sugimoto, S. Nishimoto, T. Kaneko, Y. Ohta
    • Organizer
      The 28th Intgernatipnal Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Excitonic fluctuation and collective excitations in cobalt oxides2017

    • Author(s)
      T. Yamaguchi, K. Sugimoto, Y. Ohta
    • Organizer
      The 28th Intgernatipnal Conference on Low Temperature Physics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Charge-density-wave and excitonic instabilities of a realistic multi-orbital Hubbard model with electron-phonon coupling for 1T-TiSe22017

    • Author(s)
      Tatsuya KANEKO, Yukinori OHTA, Seiji YUNOKI
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Multipole ordering and collective excitations in the excitonic phase of Pr0.5Ca0.5CoO32017

    • Author(s)
      Tomoki YAMAGUCHI, Koudai SUGIMOTO, Yukinori OHTA
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Orbital diamagnetic susceptibility in excitonic condensation phase2017

    • Author(s)
      Koudai SUGIMOTO, Yukinori OHTA
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] k-space spin texture in the excitonic phase of the triangular-lattice Hubbard model2017

    • Author(s)
      Hisao NISHIDA, Shohei MIYAKOSHI, Yukinori OHTA
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 千葉大学強相関電子系理論研究室(太田研究室)ホームページ

    • URL

      http://physics.s.chiba-u.ac.jp/ohtal/

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Remarks] Researchmap 太田幸則

    • URL

      https://researchmap.jp/Yukinori_Ohta

    • Related Report
      2021 Annual Research Report
  • [Remarks] 千葉大学大学院理学研究院物理学研究部門強相関電子系理論研究室ホームページ

    • URL

      http://physics.s.chiba-u.ac.jp/ohtal/

    • Related Report
      2019 Research-status Report
  • [Remarks] 千葉大学大学院理学研究院強相関電子系理論研究室ホームページ

    • URL

      http://physics.s.chiba-u.ac.jp/ohtal/index.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi