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

Theoretical study of photo control of excitonic insulators and high-harmonic generation using realistic models

Research Project

Project/Area Number 19K23425
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionTokyo Institute of Technology

Principal Investigator

Murakami Yuta  東京工業大学, 理学院, 助教 (70845289)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords非平衡物性理論 / 励起子絶縁体 / 高次高調波発生 / 光誘起相転移 / 非平衡物性 / 相関電子系
Outline of Research at the Start

遷移金属カルゲナイト系において近年様々な興味深い光誘起現象が報告されている。これらの現象の解明には電子相関を介した多軌道、多フォノンが織りなす非平衡ダイナミクスの理解が鍵となる。しかし、従来の相関電子系の非平衡理論研究では、手法の制限からHubbard模型などの物質の詳細を十分に考慮しない基本模型が主な研究対象であった。本研究では、多自由度模型の非平衡状態の解析を可能にする非平衡グリーン関数法を用いた新手法を開発し、物質の詳細を反映した模型に適用することで、実験的に報告されている特異な励起子絶縁体のダイナミクスと高次高調波発生のメカニズムの解明および新たな実験提案を目指す。

Outline of Final Research Achievements

In this project, we aim to theoretically study possible control of excitonic insulators out of equilibrium and to reveal the origin of the high-harmonic generation in strongly correlated systems using multi-orbital models.
In the study of excitonic insulators out of equilibrium, we revealed that there emerges, in the prethermal regime, a noneqilibrium ordered phase with no analogue in equilibrium, In the study of the high-harmonic generation, we showed that excitation structures peculiar in strongly correlated systems play an essential role.

Academic Significance and Societal Importance of the Research Achievements

本研究は、近年非平衡物性の分野で注目を集めている励起子絶縁体のダイナミクスと高次高調波発生に焦点を当てている。我々の研究成果は、光を用いた物性操作に関する新しい指針を提供しており、今後あたらしいタイプの光誘起相転移や高次高調波発生の観測につながると期待される。また、長期的にはこれらの成果をベースにして光高速スイッチングや通信デバイスへの応用も期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2021 2020 2019 Other

All Int'l Joint Research (6 results) Journal Article (15 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 10 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] コロンビア大学/Flatiron Institute/Stanford大(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] フリブール大学(スイス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Fribourg(スイス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Stanford University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Erlangen University(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Cambridge university(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] High-harmonic generation in one-dimensional Mott insulator2021

    • Author(s)
      Y. Murakami, S. Takayoshi, A. Koga, and P. Werner
    • Journal Title

      Phys. Rev. B

      Volume: 103 Issue: 3 Pages: 0351101-14

    • DOI

      10.1103/physrevb.103.035110

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Signatures of bosonic excitations in high-harmonic spectra of Mott insulators2020

    • Author(s)
      Lysne Markus、Murakami Yuta、Werner Philipp
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 19 Pages: 195139-195139

    • DOI

      10.1103/physrevb.101.195139

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonlinear Spectroscopy of Collective Modes in an Excitonic Insulator2020

    • Author(s)
      Golez Denis、Sun Zhiyuan、Murakami Yuta、Georges Antoine、Millis Andrew J.
    • Journal Title

      Physical Review Letters

      Volume: 125 Issue: 25 Pages: 257601-257601

    • DOI

      10.1103/physrevlett.125.257601

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nonthermal excitonic condensation near a spin-state transition2020

    • Author(s)
      Werner Philipp、Murakami Yuta
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 24 Pages: 241103-241103

    • DOI

      10.1103/physrevb.102.241103

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Collective Modes in Excitonic Insulators: Effects of Electron-Phonon Coupling and Signatures in Optical Response2020

    • Author(s)
      Y. Murakami, D. Golez, T. Kaneko, A. Koga, A. J. Millis, and P. Werner
    • Journal Title

      Phys. Rev. B

      Volume: 101 Issue: 19 Pages: 1951181-17

    • DOI

      10.1103/physrevb.101.195118

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Majorana-mediated spin transport in Kitaev quantum spin liquids2020

    • Author(s)
      T. Minakawa, Y. Murakami, A. Koga, and J. Nasu
    • Journal Title

      Phys. Rev. Lett.

      Volume: 125 Issue: 4 Pages: 0472041-7

    • DOI

      10.1103/physrevlett.125.047204

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excitonic condensation reflecting electronic states in two-band Penrose-Hubbard model2020

    • Author(s)
      K. Inayoshi, Y. Murakami, and A. Koga
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 89 Issue: 6 Pages: 0640021-8

    • DOI

      10.7566/jpsj.89.064002

    • NAID

      40022254127

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NESSi: The Non-Equilibrium Systems Simulation package2020

    • Author(s)
      Schuler Michael、Golez Denis、Murakami Yuta、Bittner Nikolaj、Herrmann Andreas、Strand Hugo U.R.、Werner Philipp、Eckstein Martin
    • Journal Title

      Computer Physics Communications

      Volume: 257 Pages: 107484-107484

    • DOI

      10.1016/j.cpc.2020.107484

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ultrafast nonequilibrium evolution of excitonic modes in semiconductors2020

    • Author(s)
      Y. Murakami, M. Schueler, S. Takayoshi and P. Werner
    • Journal Title

      Phys. Rev. B

      Volume: 101 Issue: 3 Pages: 035203-035203

    • DOI

      10.1103/physrevb.101.035203

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spin transport in the Quantum Spin Liquid State in the S=1 Kitaev model: role of the fractionalized quasiparticles2020

    • Author(s)
      A. Koga, T. Minakawa, Y. Murakami, and J. Nasu
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 89 Issue: 3 Pages: 33701-33701

    • DOI

      10.7566/jpsj.89.033701

    • NAID

      40022185595

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Imaging the coherent propagation of collective modes in the excitonic insulator candidate Ta2NiSe5 at room temperature2020

    • Author(s)
      P. Andrich, H. M. Bretscher, Y. Murakami, D. Golez, B. Remez, P. Telang, A. Singh, L. Harnagea, N. R. Cooper, A. J. Millis, P. Werner, A. K. Sood, and A. Rao
    • Journal Title

      arXiv

      Volume: 2003.10799

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Collective Modes in Excitonic Insulators: Effects of Electron-Phonon Coupling and Signatures in Optical Response2020

    • Author(s)
      Y. Murakami, D. Golez, T. Kaneko, A. Koga, A. J. Millis, and P. Werner
    • Journal Title

      arXiv

      Volume: 2003.10789

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Excitonic condensation reflecting electronic states in two-band Penrose-Hubbard model2020

    • Author(s)
      K. Inayoshi, Y. Murakami, and A. Koga
    • Journal Title

      arXiv

      Volume: 2002.05870

    • NAID

      40022254127

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Journal Article] Majorana-mediated spin transport without spinpolarization in Kitaev quantum spin liquids2019

    • Author(s)
      T. Minakawa, Y. Murakami, A. Koga, and J. Nasu
    • Journal Title

      arXiv

      Volume: 1912.10599

    • Related Report
      2019 Research-status Report
    • Open Access
  • [Journal Article] NESSi: The Non-Equilibrium Systems Simulation package2019

    • Author(s)
      M. Schueler, D. Golez, Y. Murakami, N. Bittner, A. Hermann, H. U. R. Strand, P. Werner and M. Eckstein
    • Journal Title

      arXiv

      Volume: 1911.01211

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Presentation] 一次元Mott絶縁体からの高次高調波発生:ダブロン・ホロンに対する3ステップ模型とスピンダイナミクスの効果2021

    • Author(s)
      村上雄太, 高吉慎太郎, 古賀昌久, Philipp Werner
    • Organizer
      日本物理学会2021春
    • Related Report
      2020 Annual Research Report
  • [Presentation] Spin状態転移近傍における励起子凝縮の非平衡理論2020

    • Author(s)
      村上雄太, Philipp Werner
    • Organizer
      日本物理学会2020秋
    • Related Report
      2020 Annual Research Report
  • [Presentation] 励起子絶縁相における集団励起モードへの電子格子相互作用の影響と観測可能性2020

    • Author(s)
      村上雄太, Denis Golez, Paolo Andrich, Hope Bretscher, 金子竜也, 古賀昌久, Andy Millis, Philipp Werner
    • Organizer
      日本物理学会2020春
    • Related Report
      2020 Annual Research Report
  • [Presentation] 励起子絶縁相における集団励起モードへの 電子格子相互作用の影響と観測可能性2020

    • Author(s)
      Y. Murakami, D. Golez, T. Kaneko, A. Koga, A. J. Millis, and P. Werner
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 強相関電子系および量子スピン系からの高次高調波発生2019

    • Author(s)
      Y. Murakami, S. Takayoshi, M. Schueler, M. Eckstein, Y. Murakami
    • Organizer
      第29回日本MRS年
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] High Harmonic Generation from Periodically Driven Mott Insulators2019

    • Author(s)
      Y. Murakami, S. Takayoshi, M. Schueler, M. Eckstein, Y. Murakami
    • Organizer
      APPC 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-09-03   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi