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NMR studies of novel quantum states in spni-orbit coupled Re oxides

Research Project

Project/Area Number 20K03829
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionHigh Energy Accelerator Research Organization (2021-2022)
The University of Tokyo (2020)

Principal Investigator

Takigawa Masashi  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 協力研究員 (10179575)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords核磁気共鳴 / スピン軌道強結合系 / レニウム酸化物 / 多極子秩序
Outline of Research at the Start

5d電子を有する二つのレニウム酸化物、スピン軌道強結合金属Cd2Re2O7および有効スピンjeff=3/2を持つモット絶縁体Ba2MgReO6の単結晶試料に対して酸素サイトのNMR測定を行い、スピンと軌道が絡んだ秩序状態の実空間における微視的な構造を明らかにする。酸素2p軌道はレニウム5d軌道と強く混成するため、酸素サイトの核磁気共鳴スペクトルは5d電子系の対称性の変化を極めて敏感に反映する。このことを利用して、Cd2Re2O7においては反転対称を破るレニウムと酸素のボンドの秩序化、Ba2MgReO6においては5d電子の磁気モーメントに加えて磁気八極子の空間分布を明らかにする。

Outline of Final Research Achievements

NMR experiments have been performed on single crystals of the spin-orbit-coupled-metal Cd2Re2O7 and the double-perovskite Mott insulator Ba2MgReO6 in order to explore novel ordered states generated by 5d electron systems with strong spin-orbit interaction. For Cd2Re2O7, Knight shift measurements of 111Cd nuclei revealed Eu symmetry of the order parameter realized by the inversion-breaking phase transition with the help of a novel analysis method to identify the irreducible representation of the point group of the nuclei, to which the shift tensor in the ordered phases belong. For Ba2MgReO6, we determined the magnetic dipole and octupole moments from the anisotropic hyperfine fields at the oxygen nuclei in the tilted antiferromagnetic phase.

Academic Significance and Societal Importance of the Research Achievements

本研究は強相関電子系の多彩な秩序状態、特に磁気双極子にとどまらない高次多極子のいわゆる隠れた秩序状態の検出に、NMRが有効であることを示した。その中で、ナイトシフトなどNMR応答を支配するテンソル量を、サイトの点群対称性の既約表現の基底によって分類するという新しい解析方法を提示した。また磁気八極子など高次多極子を定量的に評価する方法を提示した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2023 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Anisotropy-driven quantum criticality in an intermediate valence system2022

    • Author(s)
      Grbic Mihael S.、O’Farrell Eoin C. T.、Matsumoto Yosuke、Kuga Kentaro、Brando Manuel、Kuechler Robert、Nevidomskyy Andriy H.、Yoshida Makoto、Sakakibara Toshiro、Kono Yohei、Shimura Yasuyuki、Sutherland Michael L.、Takigawa Masashi、Nakatsuji Satoru
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 2141-2141

    • DOI

      10.1038/s41467-022-29757-9

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spin-orbital liquid state and liquid-gas metamagnetic transition on a pyrochlore lattice2022

    • Author(s)
      N. Tang, Y. Gritsenko, K. Kimura, S. Bhattacharjee, A. Sakai, M. Fu, H. Takeda, H. Man, K. Sugawara, Y. Matsumoto, Y. Shimura, J. Wen, C. Broolm, H. Sawa, M. Takigawa, T. Sakakibara, S. Zherlitsyn, J. Wosnitza, R. Moessner, S. Nakatsuji
    • Journal Title

      Nature Physics

      Volume: 19 Issue: 1 Pages: 92-98

    • DOI

      10.1038/s41567-022-01816-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Magnetic field driven transition between valence bond solid and antiferromagnetic order in a distorted triangular lattice2021

    • Author(s)
      Y. Shimizu, M. Maesato, M. Yoshida, M. Takigawa, M. Itoh, A. Otsuka, H. Yamochi, Y. Yoshida, G. Kawaguchi, D. Graf, and G. Saito
    • Journal Title

      Phys. Rev. Research

      Volume: 3 Issue: 2 Pages: 023145-023145

    • DOI

      10.1103/physrevresearch.3.023145

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pressure-induced phase transition in the J1-J2 square lattice antiferromagnet RbMoOPO4Cl2021

    • Author(s)
      Takeda Hikaru、Yamauchi Touru、Takigawa Masashi、Ishikawa Hajime、Hiroi Zenji
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 10 Pages: 104406-104406

    • DOI

      10.1103/physrevb.103.104406

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Regular-triangle trimer and charge order preserving the Anderson condition in the pyrochlore structure of CsW2O62020

    • Author(s)
      Okamoto Yoshihiko、Amano Haruki、Katayama Naoyuki、Sawa Hiroshi、Niki Kenta、Mitoka Rikuto、Harima Hisatomo、Hasegawa Takumi、Ogita Norio、Tanaka Yu、Takigawa Masashi、Yokoyama Yasunori、Takehana Kanji、Imanaka Yasutaka、Nakamura Yuto、Kishida Hideo、Takenaka Koshi
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41467-020-16873-7

    • NAID

      120006873092

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamic spin fluctuations in the frustrated A-site spinel CuAl2O42020

    • Author(s)
      Cho Hwanbeom、Nirmala R.、Jeong Jaehong、Baker Peter J.、Takeda Hikaru、Mera Nobuyoshi、Blundell Stephen J.、Takigawa Masashi、Adroja D. T.、Park Je-Geun
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 1

    • DOI

      10.1103/physrevb.102.014439

    • 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] Ultralow temperature NMR of CeCoIn52020

    • Author(s)
      Yamashita M.、Tashiro M.、Saiki K.、Yamada S.、Akazawa M.、Shimozawa M.、Taniguchi T.、Takeda H.、Takigawa M.、Shishido H.
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 16 Pages: 165154-165154

    • DOI

      10.1103/physrevb.102.165154

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 四極子近藤格子系PrTi2Al20の巨大線形磁気抵抗とその異方性2023

    • Author(s)
      磯前貴央, 酒井明人, Mingxian Fu, 谷口貴紀, 瀧川仁, 中辻知
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Exploring orders of extended multipoles by NMR2022

    • Author(s)
      Masashi Takigawa
    • Organizer
      ICTS workshop on Frustrated Metals and Insulators
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 四極子近藤格子系PrTi2Al20における磁場中輸送特性2022

    • Author(s)
      磯前貴央, 酒井明人, Mingxian Fu, 谷口貴紀, 瀧川仁, 中辻知
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] NMRによるパイロクロア酸化物Cd2Re2O7の相転移と秩序相の観測2022

    • Author(s)
      瀧川仁, 武田晃, 山下穣, 平井大悟郎, 広井善二, 長谷川巧
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 非磁性Γ3二重項基底状態を有するPrTi2Al20のホール効果測定2021

    • Author(s)
      磯前貴央, 酒井明人, Mingxian Fu, 谷口貴紀, 瀧川仁, 中辻知
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] High pressure phases in the Shastry-Sutherland spin system SrCu2(BO3)22021

    • Author(s)
      M. Takigawa
    • Organizer
      International Workshop on Quantum Magnets in Extreme Conditions
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] NMRから見た5d電子系Cd2Re2O7の相転移と秩序相2020

    • Author(s)
      瀧川仁, 武田晃, 平井大悟郎, 廣井善二, 長谷川巧
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 17O-NMR測定で探るBa2MgReO6の多極子秩序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 2020年秋季大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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