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Material research and physics of multipole in 5d electron systems

Research Project

Project/Area Number 18K13491
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionThe University of Tokyo

Principal Investigator

Hirai Daigorou  東京大学, 物性研究所, 助教 (80734780)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsスピン軌道相互作用 / 多極子秩序 / 四極子秩序 / 5d電子系 / ダブルペロブスカイト / レニウム化合物 / 放射光X線 / 電子相関
Outline of Final Research Achievements

In 5d transition metal compounds, electrons are expected to acquire multipolar degree of freedom due to the combined effect of electron correlations and strong spin-orbit interactions. In this work, we synthesized a series of double perovskite-type compounds containing 5d transition metal ion with 5d1 electronic configuration, and experimentally revealed spin-orbit entangled electronic state in these compounds by magnetic susceptibility and heat capacity measurements. Then, we grew high-quality single crystals of Ba2MgReO6, which shows successive phase transitions at low temperatures, for detailed measurements. We successfully observed quadrupolar ordering of 5d electrons by synchrotron x-ray diffraction measurements.

Academic Significance and Societal Importance of the Research Achievements

近年、重い原子で重要となるスピン軌道相互作用に関連した物性や機能が数多く発見され、盛んに研究されている。多極子の秩序もスピン軌道相互作用によって現れる特徴的な電子状態であるが、実験的な難しさから検証されていなかった。本研究で明らかになった5d電子系の特徴的な電子状態と多極子の秩序は、5d電子系におけるスピン軌道相互作用のはたらきの理解を深めるものである。この成果は、今後、スピン軌道相互作用により引き起こされる新たな物性や機能性の発見に寄与する成果である。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (36 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (30 results) (of which Int'l Joint Research: 9 results,  Invited: 2 results)

  • [Int'l Joint Research] Fudan University/the University of Hong Kong(中国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Muon Spin Rotation, High-Field Magnetization, and Structural Study on a Spin-Orbit-Entangled Mott Insulator Ba2MgReO62020

    • Author(s)
      Hirai Daigorou、Koda Akihiko、Matsuo Akira、Kindo Koichi、Yajima Takeshi、Hiroi Zenji
    • Journal Title

      JPS Conference Proceedings

      Volume: 30

    • DOI

      10.7566/jpscp.30.011143

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin-orbit-coupled metal candidate PbRe2O62020

    • Author(s)
      Tajima Satoshi、Hirai Daigorou、Yajima Takeshi、Nishio-Hamane Daisuke、Matsubayashi Yasuhito、Hiroi Zenji
    • Journal Title

      Journal of Solid State Chemistry

      Volume: 288 Pages: 121359-121359

    • DOI

      10.1016/j.jssc.2020.121359

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coexistence of odd-parity and even-parity order parameters in the multipole order phase of the spin-orbit coupled metal Cd2Re2O72020

    • Author(s)
      Matsubayashi Y.、Sugii K.、Hirai D.、Hiroi Z.、Hasegawa T.、Sugiura S.、Hirose H. T.、Terashima T.、Uji S.
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 20 Pages: 205133-205133

    • DOI

      10.1103/physrevb.101.205133

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Successive Symmetry Breaking in a Jeff = 3/2 Quartet in the Spin-Orbit Coupled Insulator Ba2MgReO62019

    • Author(s)
      Hirai Daigorou、Hiroi Zenji
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 6 Pages: 064712-064712

    • DOI

      10.7566/jpsj.88.064712

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] One-dimensionalization by Geometrical Frustration in the Anisotropic Triangular Lattice of the 5d Quantum Antiferromagnet Ca3ReO5Cl22019

    • Author(s)
      Hirai Daigorou、Nawa Kazuhiro、Kawamura Mitsuaki、Misawa Takahiro、Hiroi Zenji
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 4 Pages: 044708-044708

    • DOI

      10.7566/jpsj.88.044708

    • NAID

      210000155576

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Presentation] スピン軌道結合金属のバルク物性2020

    • Author(s)
      田島聖士, 平井大悟郎, 矢島健, 廣井善二
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] NMRから見た5d電子系Cd2Re2O7の相転移と秩序相の対称性2020

    • Author(s)
      米良伸義, 武田晃, 瀧川仁, 松林康仁, 平井大悟郎, 広井善二, 長谷川巧
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] スピン軌道結合金属パイロクロアCd2Re2O7における対称性の低下2020

    • Author(s)
      宇治進也, 杉浦栞理, 廣瀬陽代, 寺嶋太一, 長谷川巧, 松林康仁, 平井大悟郎, 広井善二
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cd2Re2O7における熱膨張2020

    • Author(s)
      日高宏之, 金子佑真, 村田怜也, 柳澤達也, 網塚浩, 田島聖士, 平井大悟郎, 廣井善二
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 単結晶Cd2Re2O7の横波超音波測定2020

    • Author(s)
      三上義人, 柳澤達也, 日比野瑠央, 日高宏之, 網塚浩, 平井大悟郎, 廣井善二
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] スピン軌道結合金属Cd2Re2O7の構造相転移と弾性異常2020

    • Author(s)
      中村一翔, 工藤慎也, 川崎優介, 中村光輝, 吉澤正人, 中西良樹, 平井大悟郎, 廣井善二
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 5d遷移金属化合物の物質開発と強相関電子物性の開拓2020

    • Author(s)
      平井大悟郎
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 17O核NMRで見たBa2MgReO6の二段相転移2020

    • Author(s)
      武田晃, 渡辺亮, 瀧川仁, 平井大悟郎, 廣井善二
    • Organizer
      日本物理学会 第75回年次大会(2020年)
    • Related Report
      2019 Annual Research Report
  • [Presentation] New Kitaev spin liquid candidate OsCl32019

    • Author(s)
      K. Kataoka, D. Hirai, T. Yajima, D. Hamane, S. Kittaka, T. Sakakibara and Z. Hiroi
    • Organizer
      CEMS Symposium on Emergent Quantum Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quadrupole order in a spin-orbit entangled 5d oxide2019

    • Author(s)
      D. Hirai, H. Sagayama, G Shang, H. Ohsumi, T. Arima, and Z. Hiroi
    • Organizer
      CEMS Symposium on Emergent Quantum Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Successive symmetry breaking in a spin-orbit entangled Mott insulator Ba2MgReO62019

    • Author(s)
      D. Hirai, H. Sagayama, G Shang, H. Ohsumi, T. Arima, and Z. Hiroi
    • Organizer
      International Conference on strongly correlated electron systems 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Domain control by stress in the pyrochlore oxide Cd2Re2O72019

    • Author(s)
      S. Tajima , D. Hirai , T. Yajima , D. Nishio-Hamane , and Z. Hiroi
    • Organizer
      International Conference on strongly correlated electron systems 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] New Kitaev spin liquid candidate OsCl32019

    • Author(s)
      K. Kataoka, D. Hirai, T. Yajima, D. Hamane, S. Kittaka, T. Sakakibara and Z. Hiroi
    • Organizer
      J-Physics 2019 International Conference & KINKEN-WAKATE 2019 Multipole Physics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kitaevスピン液体候補物質OsxCl32019

    • Author(s)
      片岡 亨太, 平井 大悟郎,矢島 健,浜根 大輔,橘高 俊一郎,榊原 俊郎,広井 善二
    • Organizer
      第13回物性科学領域横断研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Multipolar Order in a Spin-Orbit Entangled Mott Insulator Ba2MgReO62019

    • Author(s)
      Daigorou Hirai
    • Organizer
      3rd Asia-Pacific workshop on Quantum Magnetism
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kitaevスピン液体候補物質OsCl3の熱的特性2019

    • Author(s)
      片岡亨太, 平井大悟郎, 広井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] スピン軌道結合絶縁体Ba2CdReO6における四極子秩序2019

    • Author(s)
      平井大悟郎, 広井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超音波測定による単結晶パイロクロア酸化物Cd2Re2O7の弾性特性の研究2019

    • Author(s)
      中村一翔, 工藤慎也, 中村光輝, 吉澤正人, 中西良樹, 平井大悟郎, 廣井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cd2Re2O7における電気トロイダル四極子秩序2019

    • Author(s)
      平井大悟郎, 田島聖士, 広井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 比熱の磁場角度依存性から見たCd2Re2O7の超伝導ギャップ構造とネマティック状態2019

    • Author(s)
      橘高俊一郎, 平井大悟郎, 廣井善二, 町田一成, 榊原俊郎
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] スピン軌道結合金属パイロクロアCd2Re2O7における磁気トルク対称性2019

    • Author(s)
      宇治進也, 杉浦栞理, 廣瀬陽代, 寺嶋太一, 長谷川巧, 松林康仁, 平井大悟郎, 広井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cd2Re2O7における非相反磁気抵抗2019

    • Author(s)
      木俣基, 須藤健太, 平井大悟郎, 松林康仁, 広井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] PbRe2O6におけるスピン軌道結合金属の可能性2019

    • Author(s)
      田島聖士, 平井大悟郎, 矢島健, 廣井善二
    • Organizer
      日本物理学会 2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 異方的三角格子反強磁性体A3ReO5Cl2(A=Ca,Sr,Ba,Pb)の磁性2019

    • Author(s)
      小金聖史, 平井大悟郎, 木俣基, 野尻浩之, 広井善二
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] One-dimensionalization by frustration in the anisotropic triangular lattice of the 5d quantum antiferromagnets A3ReO5Cl2 (A = Ca, Sr, and Ba).2018

    • Author(s)
      D. Hirai, K. Nawa, T. Yajima , M. Kawamura, T. Misawa, and Z. Hiroi
    • Organizer
      International Conference on Highly Frusturated Magnetism 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spin-orbit coupled insulator Ba2MgReO62018

    • Author(s)
      D. Hirai and Z. Hiroi
    • Organizer
      Topological Phases and Functionality of Correlated Electron Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Gapless spin liquid in the anisotropic triangular lattice antiferromagnet A3ReO5Cl2 (A = Ca, Sr, Ba)2018

    • Author(s)
      D. Hirai
    • Organizer
      Topological Phases and Functionality of Correlated Electron Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 異方的三角格子5d磁性体A3ReO5Cl2(A = Ca, Sr, Ba)における次元低下2018

    • Author(s)
      平井大悟郎, 矢島健, 広井善二
    • Organizer
      2018年日本物理学会秋期大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 異方的三角格子5d量子磁性体の探索2018

    • Author(s)
      小金聖史, 平井大悟郎, 矢島健, 広井善二
    • Organizer
      2018年日本物理学会秋期大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 異方的三角格子反強磁性体Ca3ReO5Cl2の磁気励起2018

    • Author(s)
      那波和宏, 平井大悟郎, 古府麻衣子, 中島健次, 広井善二, 佐藤卓
    • Organizer
      2018年日本物理学会秋期大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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