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Chiral order and anomalous transport phenomena in frustrated magnets

Research Project

Project/Area Number 25247064
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionOsaka University

Principal Investigator

Kawamura Hikaru  大阪大学, 理学研究科, 教授 (30153018)

Co-Investigator(Kenkyū-buntansha) 谷口 年史  大阪大学, 理学研究科, 准教授 (80207183)
Project Period (FY) 2013-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥44,720,000 (Direct Cost: ¥34,400,000、Indirect Cost: ¥10,320,000)
Fiscal Year 2017: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2015: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥23,140,000 (Direct Cost: ¥17,800,000、Indirect Cost: ¥5,340,000)
Keywordsフラストレーション / 量子スピン液体 / ランダムネス / トポロジカル励起 / 3角格子 / カゴメ格子 / 厳密対角化 / カイラリティ / 量子ゆらぎ / ハニカム格子 / 正方格子 / スピングラス / モンテカルロシミュレーション
Outline of Final Research Achievements

In the project, with geometrically frustrated magnets and spin glasses as research targets, we aim at clarifying their novel phase structures and magnetic orders. Main results of our research include, 1) identification of novel "quantum-spin-liquid"states induced by frustration and randomness in a variety of two-dimensional quantum magnets, 2) finding of novel finite-temperature crossover phenomena in a regularly frustrated two-dimensional magnet, 3) finding of anomalous ordering behaviors related to "replica-symmetry breaking" in Heisenberg spin glasses with random magnetic anisotropy, and 4) finding of novel phase structures including a collinear state and a chiral state in the Kondo lattice model where spins and conduction electrons are coupled.

Report

(5 results)
  • 2017 Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (31 results)

All 2017 2016 2015 2014 2013

All Journal Article (8 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results,  Acknowledgement Compliant: 5 results) Presentation (22 results) (of which Int'l Joint Research: 4 results,  Invited: 10 results) Book (1 results)

  • [Journal Article] Finite-temperature crossover phenomenon in the S=1/2 antiferromagnetic Heisenberg model on the kagome lattice2017

    • Author(s)
      T. Shimokawa and H. Kawamura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 85 Issue: 11 Pages: 113702-113702

    • DOI

      10.7566/jpsj.85.113702

    • NAID

      210000134139

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Randomness-Induced Quantum Spin Liquid Behavior in the s = 1/2 Random J1-J2 Heisenberg Antiferromagnet on the Honeycomb Lattice2017

    • Author(s)
      K. Uematsu and H. Kawamura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 86 Issue: 4 Pages: 044704-044704

    • DOI

      10.7566/jpsj.86.044704

    • NAID

      210000134339

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin-lattice-coupled order in Heisenberg antiferromagnets on the pyrochlore lattice2016

    • Author(s)
      K. Aoyama and H. Kawamura
    • Journal Title

      Phys. Rev. Letters

      Volume: 116 Issue: 25

    • DOI

      10.1103/physrevlett.116.257201

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Low-temperature magnetic properties of the Kondo lattice model in one dimension2015

    • Author(s)
      S. Minami and H. Kawamura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 84 Issue: 4

    • DOI

      10.7566/jpsj.84.044702

    • NAID

      210000133516

    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Static and dynamical spin correlations of the S =1/2 random-bond antiferromagnetic Heisenberg model on the triangular and kagome lattices2015

    • Author(s)
      T. Shimokawa, K. Watanabe and H. Kawamura
    • Journal Title

      Physical Review B

      Volume: 92 Issue: 13

    • DOI

      10.1103/physrevb.92.134407

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Quantum spin-liquid behavior in the spin-1/2 random-bond Heisenberg antiferromagnet on the kagome lattice2014

    • Author(s)
      H. Kawamura, K. Watanabe and T. Shimokawa
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 83 Issue: 10 Pages: 103704-103704

    • DOI

      10.7566/jpsj.83.103704

    • NAID

      40020226124

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Quantum Spin-Liquid Behavior in the Spin-1/2 Random Heisenberg Antiferromagnet on the Triangular Lattice2014

    • Author(s)
      K. Watanabe
    • Journal Title

      Journal of Physical Society of Japan

      Volume: 83 Issue: 3 Pages: 034714-034714

    • DOI

      10.7566/jpsj.83.034714

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Monte Carlo simulations of the three-dimensionsl XY spin glass focusing on chiral and spin order2013

    • Author(s)
      Tomoyuki Obuchi. Hikaru Kawamura
    • Journal Title

      Physical Review B

      Volume: 87 Issue: 17 Pages: 41-654

    • DOI

      10.1103/physrevb.87.174438

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Frustration-induced spin textures2017

    • Author(s)
      H. Kawamura
    • Organizer
      Core-to-Core Spintronics Workshop 2017
    • Place of Presentation
      Senri Hankyu Hotel, Osaka
    • Year and Date
      2017-03-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ブリージングパイロクロア反強磁性体における局所格子歪みと磁気秩序2017

    • Author(s)
      青山和司、川村光
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      大阪大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] 積層3角格子反強磁性ハイゼンベルグモデルの臨界現象の数値的研究2017

    • Author(s)
      永野凱大、川村光
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      大阪大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] ランダムJ1-J2 正方格子反強磁性体における量子スピン液体的振る舞い2017

    • Author(s)
      上松和樹、川村光
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      大阪大学
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] ランダムネスが誘起する3角、カゴメ格子上の量子スピン液体2016

    • Author(s)
      川村光
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 積層3角格子反強磁性ハイゼンベルグモデルの臨界現象の数値的研究2016

    • Author(s)
      永野凱大、川村光
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] S=1/2 カゴメ格子ハイゼンベルグ反強磁性体の秩序化に対する熱ゆらぎの効果2016

    • Author(s)
      下川統久朗、川村光
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] パイロクロア反強磁性体における局所格子歪みと磁場効果2016

    • Author(s)
      青山和司、川村光
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Quantum spin liquid behaviors in the random spin-1/2 Heisenberg antiferomagnets on the triangular and kagome lattices2016

    • Author(s)
      H. Kawamura
    • Organizer
      Highly Frustrated Magnetism (HFM) 2016
    • Place of Presentation
      GIS NTU Convention Center, Taipei
    • Year and Date
      2016-09-07
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Frustration-induced symmetric skyrmion lattices in triangular magnets2015

    • Author(s)
      Hikaru Kawamura
    • Organizer
      EMN Hong Kong Meeting 2015
    • Place of Presentation
      Eaton Hotel Hong Kong, Hong Kong
    • Year and Date
      2015-12-09
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel order and dynamics in frustrated and random magnets2015

    • Author(s)
      Hikaru Kawamura
    • Organizer
      International Symposium on Present and Future of Material Sciences
    • Place of Presentation
      Sigma Hall, Osaka University
    • Year and Date
      2015-11-17
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ランダムネスが誘起する3角、カゴメ磁性体における量子スピン液体相2015

    • Author(s)
      川村光
    • Organizer
      物性研短期研究科
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2015-11-16
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] フラストレーションとエントロピー2015

    • Author(s)
      川村光
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      関西大学千里山キャンパス
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] 3角・カゴメ格子上のS=1/2ランダム反強磁性ハイゼンベルグ模型の静的・動的構造因子2015

    • Author(s)
      下川統久朗、川村光
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      早稲田大学(東京都、新宿区)
    • Year and Date
      2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] 3次元積層ハニカム格子上のクラスターXYスピングラスにおける誘電分極の磁場方向依存性2015

    • Author(s)
      崎山泰樹、川村光
    • Organizer
      日本物理学会年次大会
    • Place of Presentation
      早稲田大学(東京都、新宿区)
    • Year and Date
      2015-03-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] Multiple-Q order of the frustrated Heisenberg model on the honeycomb lattice under magnetic fields2014

    • Author(s)
      T. Shimokawa and H. Kawamura
    • Organizer
      NQS(Novel Quantum Statesin Condensed Matter) 2014
    • Place of Presentation
      Yukawa Institute for Theoretical Physics, Kyoto University (京都府、京都市)
    • Year and Date
      2014-11-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Dynamical properties of the S=1/2 random Heisenberg antiferromagnets on the kagome and the triagular lattices2014

    • Author(s)
      T. Shimokawa and H. Kawamura
    • Organizer
      NQS(Novel Quantum Statesin Condensed Matter) 2014
    • Place of Presentation
      Yukawa Institute for Theoretical Physics, Kyoto University (京都府、京都市)
    • Year and Date
      2014-11-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Quantum spin liquid behaviors in the random spin-1/2 Heisenberg antiferromagnets on the triangular and the kagome lattices2014

    • Author(s)
      H. Kawamura
    • Organizer
      NQS(Novel Quantum Statesin Condensed Matter) 2014
    • Place of Presentation
      Yukawa Institute for Theoretical Physics, Kyoto University (京都府、京都市)
    • Year and Date
      2014-11-04
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] ランダム量子カゴメ格子ハイゼンベルグ反強磁性体の量子スピン液体状態2014

    • Author(s)
      川村光、渡辺健、下川統久朗
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      中部大学(愛知県、春日井市)
    • Year and Date
      2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] フラストレートハニカム磁性体における多重Q秩序2014

    • Author(s)
      下川統久朗、川村光
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      中部大学(愛知県、春日井市)
    • Year and Date
      2014-09-09
    • Related Report
      2014 Annual Research Report
  • [Presentation] Quantum spin-liquid behavior in the spin-1/2 random Heisenberg antiferromagnet on the triangular lattice2014

    • Author(s)
      H. Kawamura
    • Organizer
      International workshop on frustration and topology in condensed matter physics
    • Place of Presentation
      NCKU, 台湾
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Quantum spin-liquid behavior in the spin-1/2 random Heisenberg antiferromagnet on the triangular lattice2014

    • Author(s)
      H. Kawamura
    • Organizer
      RIKEN-APW joint workshop: highlights in condensed matter physics
    • Place of Presentation
      理研 和光
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Book] Spin glasses (Handbook of Magnetic Materials, vol.24)2015

    • Author(s)
      H. Kawamura and T. Taniguchi,
    • Total Pages
      137
    • Publisher
      Elsevier
    • Related Report
      2015 Annual Research Report

URL: 

Published: 2013-05-15   Modified: 2020-05-15  

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