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Spin and thermal transport phenomena mediated by magnon pair in low-dimensional magnet

Research Project

Project/Area Number 16K05494
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical physics/Fundamental condensed matter physics
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

Onishi Hiroaki  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 研究副主幹 (10354903)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsスピンネマティック状態 / スピン伝導度 / 熱伝導度 / 四極子励起スペクトル / 波束ダイナミクス / 密度行列繰り込み群 / 数値対角化 / 動的密度行列繰り込み群 / 磁性
Outline of Final Research Achievements

To clarify the effect of the flow of a magnon pair in a spin nematic state in a low-dimensional magnet, we study spin and thermal transport property and its relation with magnetic property. We perform many-sided numerical analyses on spin and thermal conductivities at finite temperature, spin and thermal dynamical correlation functions at zero temperature, quadrupole excitation spectrum, and wavepacket propagation dynamics, and find that magnon pairs would contribute to the spin and thermal transport as a new type of carrier.

Academic Significance and Societal Importance of the Research Achievements

スピンネマティック状態ではマグノン対が磁化2を運ぶため、通常の磁気秩序系でマグノンが磁化1を運ぶのと比較して、より効率的にスピン流を生成できる可能性がある。本研究では、マグノン対がスピン伝導・熱伝導に寄与する効果について多面的な数値的解析を行った。低次元量子スピン系のいわゆる隠れた秩序の磁気励起子がスピン伝導や熱伝導に寄与することを示唆する結果が得られており、スピン伝導・熱伝導のメカニズムを考察する上で新しい視点を与えるものである。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (25 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 3 results,  Acknowledgement Compliant: 1 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] Oak Ridge National Laboratory/NIST Center for Neutron Research(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] National Chung-Hsing University/National Taiwan University/National Tsing Hua University(Taiwan)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Magnetic excitations and transport properties in frustrated ferromagnetic chain2019

    • Author(s)
      H. Onishi
    • Journal Title

      J. Magn. Magn. Mater.

      Volume: 479 Pages: 88-90

    • DOI

      10.1016/j.jmmm.2019.02.006

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamical quadrupole structure factor of frustrated ferromagnetic chain2018

    • Author(s)
      H. Onishi
    • Journal Title

      Physica B

      Volume: 536 Pages: 346-349

    • DOI

      10.1016/j.physb.2017.10.056

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neutron-scattering study of yttrium iron garnet2018

    • Author(s)
      S. Shamoto, T. U. Ito, H. Onishi, H. Yamauchi, Y. Inamura, M. Matsuura, M. Akatsu, K. Kodama, A. Nakao, T. Moyoshi, K. Munakata,T. Ohhara, M. Nakamura, S. Ohira-Kawamura, Y. Nemoto, and K. Shibata
    • Journal Title

      Physical Review B

      Volume: 97 Issue: 5 Pages: 1-9

    • DOI

      10.1103/physrevb.97.054429

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetic structure and dispersion relation of the S=1/2 quasi-one-dimensional Ising-like antiferromagnet BaCo2V2O8 in a transverse magnetic field2017

    • Author(s)
      M. Matsuda, H. Onishi, A. Okutani, J. Ma, H. Agrawal, T. Hong, D. M. Pajerowski, J. R. D. Copley, K. Okunishi, M. Mori, S. Kimura, and M. Hagiwar
    • Journal Title

      Phys. Rev. B

      Volume: 96 Issue: 2 Pages: 024439-024439

    • DOI

      10.1103/physrevb.96.024439

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantum phase transitions driven by rhombic-type single-ion anisotropy in the S=1 Haldane chain2017

    • Author(s)
      Y.-C. Tzeng, H. Onishi, T. Okubo, and Y.-J. Kao
    • Journal Title

      Phys. Rev. B

      Volume: 96 Issue: 6

    • DOI

      10.1103/physrevb.96.060404

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Variational Wavefunction for the Periodic Anderson Model with Onsite Correlation Factors2017

    • Author(s)
      K. Kubo and H. Onishi
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 1 Pages: 013701-013701

    • DOI

      10.7566/jpsj.86.013701

    • NAID

      40021057621

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] マグノン対輸送の実時間ダイナミクス2019

    • Author(s)
      大西弘明
    • Organizer
      量子スピン系研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Magnon-pair excitation and transport in spin nematics2019

    • Author(s)
      H. Onishi
    • Organizer
      New excitations in Spintronics 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] フラストレート量子スピン鎖の磁気励起とスピン伝導2018

    • Author(s)
      大西弘明
    • Organizer
      物性研究所スパコン共同利用・CCMS合同研究会「計算物質科学の今と未来」
    • Related Report
      2018 Annual Research Report
  • [Presentation] Magnetic excitations and transport properties in frustrated ferromagnetic chain2018

    • Author(s)
      H. Onishi
    • Organizer
      Joint European Magnetic Symposia
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マグノン対輸送の実時間ダイナミクス2018

    • Author(s)
      大西弘明
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] マグノン対の流れによるスピン伝導・熱伝導2018

    • Author(s)
      大西弘明
    • Organizer
      基研研究会「スピン系物理の最前線」
    • Related Report
      2018 Annual Research Report
  • [Presentation] Magnetic excitations of spin nematic state in frustrated quantum spin system2018

    • Author(s)
      H. Onishi
    • Organizer
      Universal Physics in Many-Body Quantum Systems
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] スピンネマティック状態におけるマグノン対の伝播ダイナミクス2018

    • Author(s)
      大西弘明
    • Organizer
      日本物理学会第73回年次大会(2018年)
    • Related Report
      2017 Research-status Report
  • [Presentation] フラストレート量子スピン鎖の磁気励起とスピン伝導2017

    • Author(s)
      大西弘明
    • Organizer
      物性研究所スパコン共同利用・CCMS合同研究会「計算物質科学の今と未来」
    • Related Report
      2017 Research-status Report
  • [Presentation] Dynamical quadrupole structure factor of frustrated ferromagnetic chain2017

    • Author(s)
      H. Onishi
    • Organizer
      The International Conference on Strongly Correlated Electron Systems
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] フラストレート強磁性鎖のスピンネマティック状態における磁気熱効果2017

    • Author(s)
      大西弘明
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] スピン多極子相のスピン伝導と熱伝導2017

    • Author(s)
      大西弘明
    • Organizer
      量子スピン系研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] フラストレート量子スピン鎖のスピン伝導と熱伝導2016

    • Author(s)
      大西弘明
    • Organizer
      量子スピン系研究会
    • Place of Presentation
      福井大学文京キャンパス (福井県 福井市)
    • Year and Date
      2016-12-02
    • Related Report
      2016 Research-status Report
  • [Presentation] フラストレート量子スピン鎖のスピン伝導と熱伝導2016

    • Author(s)
      大西弘明
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学角間キャンパス (石川県 金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] Spin and quadrupole excitations in spin nematic state2016

    • Author(s)
      H. Onishi
    • Organizer
      8th International Conference on Highly Frustrated Magnetism
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2016-09-07
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 強磁性フラストレート鎖のスピンネマティック状態の磁気励起2016

    • Author(s)
      大西弘明
    • Organizer
      ポスト「京」重点課題(7)「次世代の産業を支える新機能デバイス・高性能材料の創生」サブ課題G第4回「共通基盤シミュレーション手法」連続研究会
    • Place of Presentation
      東京理科大学葛飾キャンパス (東京都 葛飾区)
    • Year and Date
      2016-05-07
    • Related Report
      2016 Research-status Report
    • Invited
  • [Remarks] 大西弘明

    • URL

      http://www11.plala.or.jp/sces/onishi/index.html

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

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Published: 2016-04-21   Modified: 2022-02-22  

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