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Carrier-doping into Kitaev spin liquids by soft chemical process

Research Project

Project/Area Number 19K21837
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 13:Condensed matter physics and related fields
Research InstitutionTohoku University

Principal Investigator

Ohgushi Kenya  東北大学, 理学研究科, 教授 (30455331)

Co-Investigator(Kenkyū-buntansha) 今井 良宗  東北大学, 理学研究科, 准教授 (30435599)
青山 拓也  東北大学, 理学研究科, 助教 (80757261)
Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Keywordsキタエフスピン液体 / キャリアドーピング / 電荷整列 / ソフト化学法 / 高圧合成 / 強相関電子系 / 金属絶縁体転移 / 電荷秩序 / インターカレーション
Outline of Research at the Start

本研究課題では、ソフト化学的手法によるキタエフスピン液体RuCl3へのキャリアドーピング系の開発と、高圧合成法による新キタエフスピン液体物質の探索を実施する。特に、キャリアドーピング系におけるモット転移と異方的超伝導の観測と、未だ実験的に捉えられていない局在マヨラナ粒子に関する情報を獲得することに挑む。これらの研究を通して、キタエフスピン液体の学理構築へ貢献することを目的とする。

Outline of Final Research Achievements

By using various synthesis methods, we have developed several new materials that are located in the vicinity of Kitaev spin liquids. By employing the high-pressure synthesis method, we obtained RuBr3 and RuI3, which have electronic states similar to those of Kitaev spin liquid and strongly correlated semimetal, respectively. It was also found that the solid solutions of RuBr3 and RuI3 exhibit a bandwidth-controlled-type Mott transition. By employing the soft chemical method, we obtained the carrier-doped system of RuCl3, which shows a metal-insulator transition due to the charge ordering. It was also found that the magnetic ordering observed in RuCl3 is fully suppressed in the carrier-doped system.

Academic Significance and Societal Importance of the Research Achievements

キタエフスピン液体におけるマヨラナ励起は、量子コンピュータに応用することができる。本研究により得た新物質の電子状態を、微視的観点からさらに深く理解することで、より理想的なキタエフスピン液体を具現し量子コンピュータへ応用することへ前進することができる。また、本研究により得た新物質開発の指針は固体化学分野へ波及効果があり、その指針を採ることで将来さらなる新物質が生み出されることが期待される。

Report

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

    (28 results)

All 2021 2020 2019

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 1 results) Presentation (18 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Journal Article] Structural, electrical, magnetic, and optical properties of iron-based ladder compounds BaFe2(S1?xSex)32020

    • Author(s)
      Imaizumi Satoshi、Aoyama Takuya、Kimura Ryota、Sasaki Koya、Nambu Yusuke、Avdeev Maxim、Hirata Yasuyuki、Ikemoto Yuka、Moriwaki Taro、Imai Yoshinori、Ohgushi Kenya
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 3 Pages: 035104-035104

    • DOI

      10.1103/physrevb.102.035104

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-pressure synthesis of heavily hole-doped cuprates Mg1?xLixCu2O3 with quasi-one-dimensional structure2020

    • Author(s)
      Imai Yoshinori、Sasaki Koya、Aoyama Takuya、Shirasaki Kenji、Yamamura Tomoo、Ohgushi Kenya
    • Journal Title

      Physical Review B

      Volume: 101 Issue: 24 Pages: 245112-245112

    • DOI

      10.1103/physrevb.101.245112

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Successive magnetic transitions and spin structure in the two-leg ladder compound CsFe2Se3 observed by Cs133 and Se77 NMR2020

    • Author(s)
      Murase Mina、Okada Kaoru、Kobayashi Yoshiaki、Hirata Yasuyuki、Hashizume Kazuki、Aoyama Takuya、Ohgushi Kenya、Itoh Masayuki
    • Journal Title

      Physical Review B

      Volume: 102 Issue: 1 Pages: 014433-014433

    • DOI

      10.1103/physrevb.102.014433

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mössbauer study of rare-earth ferroborate NdFe<sub>3</sub>(BO<sub>3</sub>)<sub>4</sub>2020

    • Author(s)
      Nakamura Shin、Masuda Takatsugu、Ohgushi Kenya、Katsufuji Takuro
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 8 Pages: 084703-084703

    • DOI

      10.7566/jpsj.89.084703

    • NAID

      210000158375

    • URL

      https://pure.teikyo.jp/en/publications/0e36f3a0-1b84-46b4-8f95-8b99d58932c6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dichotomy Between Orbital and Magnetic Nematic Instabilities in BaFe2S32020

    • Author(s)
      S. Hosoi, T. Aoyama, K. Ishida, Y. Mizukami, K. Hashizume, S. Imaizumi, Y. Imai, K. Ohgushi, Y. Nambu, M. Kimata, S. Kimura, and T. Shibauchi
    • Journal Title

      Phys. Rev. Res.

      Volume: 2 Issue: 4 Pages: 043293-043293

    • DOI

      10.1103/physrevresearch.2.043293

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] aMn2As2における磁気四極子秩序2020

    • Author(s)
      大串研也, 江見知俊
    • Journal Title

      固体物理

      Volume: 56 Pages: 623-623

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large magnon contributions to thermal conductance in quasi-one-dimensional Fe-based ladder compounds BaFe2(S1-xSex)32019

    • Author(s)
      Fei Du, Yutaka Ueda, and Kenya Ohgushi
    • Journal Title

      Phys. Rev. Lett.

      Volume: 123 Issue: 8

    • DOI

      10.1103/physrevlett.123.086601

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Semimetallic State in La3Ir3O11 with the KSbO3 Structure2019

    • Author(s)
      Aoyama Takuya、Emi Kazutoshi、Tabata Chihiro、Nambu Yusuke、Nakao Hironori、Yamauchi Touru、Ohgushi Kenya
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 9 Pages: 093706-093706

    • DOI

      10.7566/jpsj.88.093706

    • NAID

      40022008722

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Polar state induced by block-type lattice distortions in BaFe2Se3 with quasi-one-dimensional ladder structure2019

    • Author(s)
      Takuya Aoyama, Satoshi Imaizumi, Takuya Togashi, Yoshifumi Sato, Kazuki Hashizume, Yusuke Nambu, Yasuyuki Hirata, Masakazu Matsubara, and Kenya Ohgushi
    • Journal Title

      Phys. Rev. B

      Volume: 99 Issue: 24 Pages: 241109-241109

    • DOI

      10.1103/physrevb.99.241109

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hydrated lithium intercalation into the Kitaev spin liquid candidate material α?RuCl32019

    • Author(s)
      Imai Yoshinori、Konno Katsuya、Hasegawa Yoshinao、Aoyama Takuya、Ohgushi Kenya
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 24 Pages: 1-7

    • DOI

      10.1103/physrevb.99.245141

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 梯子型鉄系化合物における量子液晶状態―超伝導とマルチフェロイクス―2021

    • Author(s)
      大串 研也
    • Organizer
      第12 回 日本放射光学会 若手研究会「放射光若手スクール」(招待講演)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Kitaevスピン液体候補物質RuX3 (X = Cl, Br, I)の配位子置換効果2021

    • Author(s)
      藤原 秀行
    • Organizer
      日本物理学会年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 梯子型鉄系化合物 BaFe2(S1-xSex)3 における圧力下電気抵抗測定 -II2020

    • Author(s)
      野島 綸斗
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Kitaevスピン液体候補物質ルテニウムハライドの高圧合成2020

    • Author(s)
      今井 良宗
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Bandwidth and filling control of Kitaev spin liquid in RuCl32020

    • Author(s)
      大串 研也
    • Organizer
      新学術領域研究「量子液晶の物性科学」領域研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Ligand substitution effect of Kitaev-spin liquid candidate materials RuX3 (X=Cl, Br, and I)2020

    • Author(s)
      藤原 秀行
    • Organizer
      新学術領域研究「量子液晶の物性科学」領域研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Pressure-induced orbital switching in iron-based ladder material BaFe2(S1-xSex)32020

    • Author(s)
      青山 拓也
    • Organizer
      新学術領域研究「量子液晶の物性科学」領域研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 新しいキタエフスピン液体候補物質ルテニウムハライドの高圧合成2020

    • Author(s)
      今井 良宗
    • Organizer
      新学術領域研究「量子液晶の物性科学」量子物質開発フォーラム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 梯子型鉄系化合物 BaFe2X3 (X = S および Se) における圧力誘起軌 道スイッチング2020

    • Author(s)
      青山 拓也
    • Organizer
      第61回高圧討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Eelectrical resistivity measurements under high pressure of for the iron-based ladder materials BaFe2(S1-xSex)32020

    • Author(s)
      野島 綸斗
    • Organizer
      材料科学拠点・スピン拠点国際シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Alkali metal intercalation effect on a Kitaev spin liquid candidate material α-RuCl32020

    • Author(s)
      今野 克哉
    • Organizer
      GP-Spin Student Organized Seminar 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] BaMn2As2の交流伝導度測定2020

    • Author(s)
      青山拓也, 江見知俊, 木村尚次郎, 大串研也
    • Organizer
      日本物理学会第75回年次大会(2020年)
    • Related Report
      2019 Research-status Report
  • [Presentation] アルカリ金属インターカレーション化合物AxRuCl3・yH2O(A = Li, K, Rb)の合成と物性2020

    • Author(s)
      今野克哉, 今井良宗, 大串研也
    • Organizer
      日本物理学会第75回年次大会(2020年)
    • Related Report
      2019 Research-status Report
  • [Presentation] 梯子型鉄系化合物BaFe2(S1-xSex)3における圧力下電気抵抗測定2020

    • Author(s)
      野島綸斗, 青山拓也, 今井良宗, 大串研也
    • Organizer
      日本物理学会第75回年次大会(2020年)
    • Related Report
      2019 Research-status Report
  • [Presentation] Magneto-transport properties in noncentrosymmetric antiferromagnets Ba1-xKxMn2As22020

    • Author(s)
      工藤 真裕
    • Organizer
      The 3rd Symposium for The Core Research Clusters for Materials Science and Spintronics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ferroic Order of Magnetic Quadrupoles in BaMn2As22019

    • Author(s)
      大串 研也
    • Organizer
      J-Physics 2019 International Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Exploring novel electronic properties near Kitaev spin liquid2019

    • Author(s)
      大串 研也
    • Organizer
      rd Asia-Pacific Workshop on Quantum Magnetism
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] BaMn2As2における磁気四極子秩序2019

    • Author(s)
      大串 研也
    • Organizer
      J-Physics地域研究会
    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2022-01-27  

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