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Exploration of novel superconducting states in transition metal compounds with a honeycomb structure

Research Project

Project/Area Number 19K03748
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 InstitutionOsaka University (2020-2021)
Okayama University (2019)

Principal Investigator

Kazutaka Kudo  大阪大学, 理学研究科, 教授 (40361175)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords新奇超伝導状態 / ハニカムネットワーク / カイラル超伝導 / カゴメネットワーク / 超伝導材料
Outline of Research at the Start

本研究では、研究代表者が発見した新超伝導体BaPtSb、SrPtAs、β-BaPtAs、γ-BaPtAsにおいて、カイラルd波超伝導状態の探索と新奇物性の開拓を行う。これらの超伝導体はハニカム構造を持つ。本研究の独創性は、構造の対称性からカイラルd波超伝導状態が自然に導かれるハニカム構造に着目した点にある。研究方法は、良質な単結晶試料の育成、磁化・電気抵抗・比熱による超伝導基礎物性の測定、ミュオンスピン回転/緩和法によるカイラルd波超伝導状態の実証や表面スピン流検出の試みからなる。

Outline of Final Research Achievements

In the superconducting state of compounds with a honeycomb network, we observed an increase in the muon spin relaxation rate that suggests a spontaneous magnetic field. The increase disappeared with impurity doping. These cannot be explained by conventional superconducting states. In honeycomb networks, the emergence of exotic superconducting states has been predicted based on the symmetry. Detailed consideration on superconducting electron pairs is currently underway along with the in-depth analysis. Furthermore, we explored superconductors with Kagome and triangular networks, which are expected to exhibit exotic superconductivity as well as honeycomb networks based on their symmetry, and discovered several new superconductors.

Academic Significance and Societal Importance of the Research Achievements

原子ネットワークの対称性に着目して系統的に超伝導物質開発を行い、新奇超伝導状態を探索したことに本研究の意義がある。当初から着目していたハニカムネットワークだけでなく、三角形ネットワーク、カゴメネットワークへと研究対象が広がり、より普遍的な知見を得るための研究へと発展させる準備が整った。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (40 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 9 results,  Open Access: 1 results) Presentation (26 results) (of which Int'l Joint Research: 8 results,  Invited: 8 results) Remarks (1 results)

  • [Int'l Joint Research] Paul Scherrer Institut (PSI)(スイス)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] The Paul Scherrer Institute(スイス)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Universita di Roma “La Sapienza”(イタリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Paul Scherrer Institut(スイス)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Enhanced Superconductivity in Close Proximity to Polar-Nonpolar Structural Phase Transition in Se/Te-Substituted PtBi22022

    • Author(s)
      K. Takaki, M. Yamamoto, M. Nakajima, T. Takeuchi, H. Y. Nguyen, M. Nohara, Y. Kishioji, T. Fujii, K. Yoshino, S. Miyasaka, and K. Kudo
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 91 Issue: 3

    • DOI

      10.7566/jpsj.91.034703

    • NAID

      210000188846

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superconductivity of the Stuffed CdI2-type Pt1+xBi22021

    • Author(s)
      K. Kudo, H. Y. Nguyen, C.-g. Oh, K. Takaki, and M. Nohara
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 6 Pages: 063706-063706

    • DOI

      10.7566/jpsj.90.063706

    • NAID

      40022591105

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pressure Induced Spectral Redistribution due to Te2 Dimer Breaking in AuTe22021

    • Author(s)
      D. Ootsuki, H. Okamura, S. Mitsumoto, Y. Ikemoto, T. Moriwaki, M. Arita, T. Yoshida, K. Kudo, H. Ishii, M. Nohara, and T. Mizokawa
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 90 Issue: 11

    • DOI

      10.7566/jpsj.90.114705

    • NAID

      210000159424

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Superconductivity of the Partially Ordered Laves Phase Mg2Ir2.3Ge1.72020

    • Author(s)
      K. Kudo, T. Honda, H. Hiiragi, H. Ota, and M. Nohara
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 12 Pages: 123701-123701

    • DOI

      10.7566/jpsj.89.123701

    • NAID

      40022436752

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Superconductivity in Mg2Ir3Si: A Fully Ordered Laves Phase2020

    • Author(s)
      K. Kudo, H. Hiiragi, T. Honda, K. Fujimura, H. Idei, M. Nohara
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 89 Issue: 1 Pages: 013701-013701

    • DOI

      10.7566/jpsj.89.013701

    • NAID

      210000157736

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of Local Atomic Fluctuations on Superconductivity of Pr-Substituted CaFe2As2 Studied by X-ray Fluorescence Holography2019

    • Author(s)
      K. Kudo, S. Ioka, N. Happo, H. Ota, Y. Ebisu, K. Kimura, T. Hada, T. Kimura, H. Tajiri, S. Hosokawa, K. Hayashi, M. Nohara
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 6 Pages: 063704-063704

    • DOI

      10.7566/jpsj.88.063704

    • NAID

      40021915136

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interplay between spin-orbit interaction and stripe-type charge-orbital order of IrTe22019

    • Author(s)
      D. Ootsuki, H. Ishii, K. Kudo, M. Nohara, M. Arita, H. Namatame, M. Taniguchi, N. L. Saini, T. Mizokawa
    • Journal Title

      Journal of Physics and Chemistry of Solids

      Volume: 128 Pages: 270-274

    • DOI

      10.1016/j.jpcs.2018.02.015

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The local structure of the Ca0.9Pr0.1Fe2As2 superconductor as a function of temperature2019

    • Author(s)
      E. Paris, T. Wakita, L. Simonelli, C. Marini, W. Olszewski, K. Terashima, F. Stramaglia, G. M. Pugliese, T. Mizokawa, S. Ioka, K. Kudo, M. Nohara, T. Yokoya, N. L. Saini
    • Journal Title

      Superconductor Science and Technology

      Volume: 32 Issue: 9 Pages: 095001-095001

    • DOI

      10.1088/1361-6668/ab2792

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thermal Conductivity and Magnetic Phase Diagram of CuB2O42019

    • Author(s)
      Takayuki Kawamata, Naoki Sugawara, Siyed Mohammad Haidar, Tadashi Adachi, Takashi Noji, Kazutaka Kudo, Norio Kobayashi, Yutaka Fujii, Hikomitsu Kikuchi, Meiro Chiba, German A. Petrakovskii, Mikhail A. Popov, Leonard N. Bezmaternykh, Yoji Koike
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 11 Pages: 114708-114708

    • DOI

      10.7566/jpsj.88.114708

    • NAID

      40022062720

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 三角形・ハニカム・カゴメネットワークを持つ超伝導体の物質開発2022

    • Author(s)
      工藤一貴
    • Organizer
      日本中間子科学会研究会「ミュオンで見る磁性・超伝導物質研究の最前線」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Superconductivity in Pt1+xBi2 with a stuffed CdI2-type structure2022

    • Author(s)
      工藤一貴
    • Organizer
      令和 3 年度 新学術領域研究「量子液晶の物性科学」領域研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ハニカムネットワークを持つBaPt(As1-xSbx)の合成と超伝導特性2022

    • Author(s)
      小川泰輝、竹内徹也、木田孝則、萩原政幸、工藤一貴
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Ba(Fe1-xCrx)2As2 における電荷ネマティックラマン応答のCr置換量依存性2022

    • Author(s)
      片山和郷、足立徹、小林達也、中島正道、宮坂茂樹、工藤一貴
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 化学ドープした PtBi2 における超伝導転移温度の上昇2022

    • Author(s)
      高木健輔、竹内徹也、中島正道、工藤一貴
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] SeドープPtBi2薄膜の超伝導特性2022

    • Author(s)
      前田将輝、徳田将志、中村瞭弥、高木健輔、工藤一貴、新見康洋
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Superconductivity of the Fully and Partially Ordered Laves Phase Compounds2021

    • Author(s)
      K. Kudo, T. Honda, H. Hiiragi, and M. Nohara
    • Organizer
      International Conference on Quantum Liquid Crystals 2021 (QLC2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chiral Superconductivity in BaPtAs1-x Sbx with a Honeycomb Network2021

    • Author(s)
      T. Adachi, K. Kudo, Y. Saito, T. Sumura, K. Kawabata, T. Takeuchi, A. Koda, H. Okabe, R. Kadono, T. U. Ito, W. Higemoto, C. Baines, I. Watanabe, and M. Nohara
    • Organizer
      International Conference on Quantum Liquid Crystals 2021 (QLC2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 秩序型ラーベス相構造を利用した超伝導体の開発2021

    • Author(s)
      工藤一貴
    • Organizer
      令和 3 年度「第 2 回 強磁場コラボラトリー オンラインセミナー」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 秩序型ラーベス相化合物の超伝導物質開発2021

    • Author(s)
      工藤一貴
    • Organizer
      第5回固体化学フォーラム研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] インターグロース構造を利用した層状ペロブスカイト型 V 酸化物の相転移現象の研究2021

    • Author(s)
      藤井隆弘、中島正道、工藤一貴
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ハニカム構造を持つBaPt(As1-xSbx)の超伝導2021

    • Author(s)
      小川泰輝、竹内貴亮、齋藤有紀、竹内徹也、宮坂茂樹、中島正道、野原実、工藤一貴
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] CdI2型Pt(Bi1-xChx)2 (Ch = Se, Te) の超伝導2021

    • Author(s)
      高木健輔、山本真由、中島正道、竹内徹也、Hoang Yen Nguyen、野原実、宮坂茂樹、工藤一貴
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 秩序型ラーベス相化合物における新規超伝導体の開発(シンポジウム講演)2020

    • Author(s)
      工藤一貴
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Development of New Superconductors with Ordered Laves Phase Structures2020

    • Author(s)
      K. Kudo
    • Organizer
      The 33rd International Symposium on Superconductivity (ISS2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of Superconductors with Ordered Laves Phase Structures2020

    • Author(s)
      K. Kudo, T. Honda, H. Hiiragi, H. Ota, and M. Nohara
    • Organizer
      令和2年度 新学術領域研究「量子液晶の物性科学」領域研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Possible Chiral d-Wave Superconductivity in BaPtAs1-xSbx with the Honeycomb Network2020

    • Author(s)
      T. Adachi, K. Kudo, Y. Saito, T. Sumura, K. Kawabata, T. Takeuchi, A. Koda, H. Okabe, R. Kadono, T. U. Ito, W. Higemoto, C. Baines, I. Watanabe, and M. Nohara
    • Organizer
      令和2年度 新学術領域研究「量子液晶の物性科学」領域研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 秩序型ラーベス相Mg2Ir3SiとLi2IrSi3の超伝導2020

    • Author(s)
      工藤一貴, 柊輝, 本田寿明, 野原実
    • Organizer
      J-Physics:多極子伝導系の物理 令和元年度領域全体会議
    • Related Report
      2019 Research-status Report
  • [Presentation] 秩序型ラーベス相Mg2Ir3Siの超伝導2020

    • Author(s)
      工藤一貴, 柊輝, 本田寿明, 藤村一徳, 出井宏幸, 野原実,
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Development of novel hexagonal superconductors with 5d transition metals2019

    • Author(s)
      K. Kudo
    • Organizer
      Progress in Superconductivity Research - RIIS Mini-Workshop -
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Exploration of Novel Pt-Based Superconductors with Honeycomb Networks2019

    • Author(s)
      K. Kudo
    • Organizer
      Research Frontier of Advanced Spectroscopies for Correlated Electron Systems
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of novel superconducting materials using polymorphism2019

    • Author(s)
      工藤一貴
    • Organizer
      新学術領域研究「量子液晶の物性科学」キックオフミーティング
    • Related Report
      2019 Research-status Report
  • [Presentation] Exploration of Chiral Superconductivity in Hexagonal BaPtAs and BaPtSb2019

    • Author(s)
      K. Kudo, Y. Saito, T. Takeuchi, T. Adachi, H. Ota, and M. Nohara
    • Organizer
      International Conference on Strongly Correlated Electron Systems 2019 (SCES’19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Influence of Positional Fluctuations of Arsenic Atoms on Superconductivity of Pr-Substituted CaFe2As2 Revealed by X-Ray Fluorescence Holography2019

    • Author(s)
      K. Kudo, S. Ioka, N. Happo, H. Ota, Y. Ebisu, K. Kimura, T. Hada, T. Kimura, H. Tajiri, S. Hosokawa, K. Hayashi, and M. Nohara
    • Organizer
      International Conference on The Strucure of Non-crystalline Materials (NCM14)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Superconductivity induced by breaking dimers of IrTe2 and AuTe22019

    • Author(s)
      K. Kudo
    • Organizer
      Pan Pacific International Symposium on Chalcogenide Functional Materials
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] SrPtAsの角度分解光電子分光2019

    • Author(s)
      寺嶋健成, 片岡範行, 谷口拓海, 齋藤有紀, 工藤一貴, 野原実, 臼井秀知, 村岡祐治, 高野義彦, 横谷尚睦
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 大阪大学大学院理学研究科物理学専攻工藤研究室ホームページ

    • URL

      http://qm.phys.sci.osaka-u.ac.jp

    • Related Report
      2021 Annual Research Report 2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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