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Development of new torque magnetory and its appllication to the strongly correlated electron systems

Research Project

Project/Area Number 16K13837
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Condensed matter physics II
Research InstitutionKyoto University

Principal Investigator

Kasahara Shigeru  京都大学, 理学研究科, 助教 (10425556)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords磁気トルク / カンチレバー / 回転対称性の破れ / 銅酸化物高温超伝導体 / 擬ギャップ / 電子ネマティック転移 / 電荷液晶 / 量子液晶 / 電子ネマティック相転移 / ネマティック転移 / 回転対称性 / 量子臨界点 / 高温超伝導 / ネマティック秩序
Outline of Final Research Achievements

Highly sensitive magnetic probes are one of the most important tools for the advanced condensed matter physics. Here, we examined newly developed miniature piezoresistive devices for the sensors of torque magnetometry. By using our exceptionally precise in-plane torque magnetometry, we found in the normal state of high-Tc cuprate superconductors that a spontaneous in-plane rotational symmetry breaking occurs at the onset temperature of the pseudogap, evidencing an electronic nematic transition. Our results shed new insight on the enigmatic pseudogap physics in cuprate superconductors.

Academic Significance and Societal Importance of the Research Achievements

面内磁気トルクの超精密測定を行うことで、銅酸化物高温超伝導体の擬ギャップ状態において、電子ネマティック転移、即ち、電子集団の自己組織化によって空間的に非対称な新しいタイプの秩序状態への相転移を起こしていることが明らかになった。これは物質中の電子集団が量子多体効果にともなって、ある種の液晶状態を形成していることを示したものである。本研究成果は銅酸化物高温超伝導体の発見以来、最大の謎とされる擬ギャップ状態の性質を明らかにしたものであり、学術的にも重要な意義をもつ。

Report

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

    (26 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (6 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 4 results,  Invited: 8 results) Remarks (2 results)

  • [Int'l Joint Research] Oxford Univ.(英国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Ruhr-Universitat Bochum(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] EMFL Nijmegen(オランダ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Max Planck Institute(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] KAIST(韓国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Univ. of Minnesota(米国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Evolution of the low-temperature Fermi surface of superconducting FeSe1-xSx across a nematic phase transition2019

    • Author(s)
      Coldea Amalia I.、Blake Samuel F.、Kasahara Shigeru、Haghighirad Amir A.、Watson Matthew D.、Knafo William、Choi Eun Sang、McCollam Alix、Reiss Pascal、Yamashita Takuya、Bruma Mara、Speller Susannah C.、Matsuda Yuji、Wolf Thomas、Shibauchi Takasada、Schofield Andrew J.
    • Journal Title

      npj Quantum Materials

      Volume: 4 Issue: 1 Pages: 2-2

    • DOI

      10.1038/s41535-018-0141-0

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electrical resistivity across a nematic quantum critical point2019

    • Author(s)
      Licciardello S.、Buhot J.、Lu J.、Ayres J.、Kasahara S.、Matsuda Y.、Shibauchi T.、Hussey N. E.
    • Journal Title

      Nature

      Volume: 567 Issue: 7747 Pages: 213-217

    • DOI

      10.1038/s41586-019-0923-y

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantum Vortex Core and Missing Pseudogap in the Multiband BCS-BEC Crossover Superconductor FeSe2019

    • Author(s)
      Hanaguri T.、Kasahara S.、B?ker J.、Eremin I.、Shibauchi T.、Matsuda Y.
    • Journal Title

      Physical Review Letters

      Volume: 122 Issue: 7 Pages: 77001-77001

    • DOI

      10.1103/physrevlett.122.077001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 77Se-NMR Study under Pressure on 12%-S Doped FeSe2019

    • Author(s)
      Kuwayama Takanori、Matsuura Kohei、Mizukami Yuta、Kasahara Shigeru、Matsuda Yuji、Shibauchi Takasada、Uwatoko Yoshiya、Fujiwara Naoki
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 3 Pages: 033703-033703

    • DOI

      10.7566/jpsj.88.033703

    • NAID

      210000135114

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two distinct superconducting pairing states divided by the nematic end point in FeSe1-xSx2018

    • Author(s)
      Hanaguri Tetsuo、Iwaya Katsuya、Kohsaka Yuhki、Machida Tadashi、Watashige Tatsuya、Kasahara Shigeru、Shibauchi Takasada、Matsuda Yuji
    • Journal Title

      Science Advances

      Volume: 4 Issue: 5

    • DOI

      10.1126/sciadv.aar6419

    • NAID

      120006471158

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Thermodynamic evidence for a nematic phase transition at the onset of the pseudogap in YBa2Cu3Oy2017

    • Author(s)
      Y. Sato, S. Kasahara, H. Murayama, Y. Kasahara, E-G. Moon, T. Nishizaki, T. Loew, J. Porras, B. Keimer, T. Shibauchi and Y. Matsuda
    • Journal Title

      Nature Physics

      Volume: 13 Issue: 11 Pages: 1074-1078

    • DOI

      10.1038/nphys4205

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Nematic Phase Transition at the Onset of Pseudogap in Cuprates2018

    • Author(s)
      Shigeru Kasahara
    • Organizer
      Plasma 2019 Workshop, Jan. 18- 21, 2018. Univ. Central Florida, Orlando, FL, USA.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Shigeru Kasahara2018

    • Author(s)
      Nematic transition at the onset of pseudogap in cuprates
    • Organizer
      Energy and Environmental Applications (CMCEE-2018), Jul. 22-27, 2018, Suntec, Singapore.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nematic transition at the onset of pseudogap in cuprates2018

    • Author(s)
      Shigeru Kasahara
    • Organizer
      International Workshop on Recent Progress in Superconductivity, Jul. 13-15, 2018, Peyongchang, Korea
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 銅酸化物高温超伝導体における新奇なネマティシティ2018

    • Author(s)
      笠原成
    • Organizer
      京都大学基礎物理学研究所研究会「多自由度電子状態と電子相関が生み出す新奇超伝導の物理」, 2018 年5 月 7-9日, 京都大学, 京都市
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Hg系銅酸化物高温超伝導体の擬ギャップ状態におけるダイアゴナルネマティシティの観測2018

    • Author(s)
      村山陽奈子, 佐藤雄貴, 笠原成, 笠原裕一, 芝内孝禎, 内山裕士, 山本文子, 松田祐司
    • Organizer
      日本物理学会 第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] HgBa2CuO4+δの擬ギャップ状態におけるネマティシティ2017

    • Author(s)
      村山陽奈子, 佐藤雄貴, 笠原成, 笠原裕一, 芝内孝禎, 内山裕士, 松田祐司
    • Organizer
      日本物理学会 2017年年次大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] ネマティック転移を伴う擬ギャップ相2017

    • Author(s)
      笠原成
    • Organizer
      日本物理学会 2017年年次大会
    • Place of Presentation
      大阪大学豊中キャンパス
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] 正方晶のHgBa2CuO4+δの擬ギャップ状態における四回対称性の破れ2017

    • Author(s)
      村山陽奈子, 佐藤雄貴, 笠原成, 笠原裕一, 芝内孝禎, 内山裕士, 松田祐司
    • Organizer
      日本物理学会 2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Nematic Phase Transition at the Onset of Pseudogap in Cuprates2017

    • Author(s)
      S. Kasahara
    • Organizer
      The 30th International Symposium on Superconductivity (ISS2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 銅酸化物高温超伝導体の擬ギャップ相におけるネマティック転移2016

    • Author(s)
      笠原成
    • Organizer
      基研研究会 「超伝導研究の最先端:多自由度、非平衡、電子相関、トポロジー」
    • Place of Presentation
      京都大学基礎物理学研究所
    • Year and Date
      2016-10-10
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] YBa2Cu3O7-δ/ YBa2Cu4O8の擬ギャップ状態におけるネマティシティ2016

    • Author(s)
      佐藤雄貴, 下山祐介, 笠原成, 笠原裕一, 芝内孝禎, 西嵜照和, Antony Carrington, Carsten Putzke, 松田祐司
    • 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
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] 銅酸化物超伝導体の擬ギャップ相におけるネマティック転移2016

    • Author(s)
      笠原成
    • Organizer
      高温超伝導フォーラム第4回会合(金沢)
    • Place of Presentation
      金沢勤労者プラザ
    • Year and Date
      2016-09-12
    • Related Report
      2016 Research-status Report
    • Invited
  • [Remarks] 京都大学量子凝縮物性研究室

    • URL

      http://kotai2.scphys.kyoto-u.ac.jp/index.php?Top

    • Related Report
      2017 Research-status Report
  • [Remarks] 京都大学量子凝縮物性研究室

    • URL

      http://kotai2.scphys.kyoto-u.ac.jp/

    • Related Report
      2016 Research-status Report

URL: 

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

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