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Muon spin spectroscopy study of hidden order state of URu2Si2

Research Project

Project/Area Number 25800211
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Condensed matter physics II
Research InstitutionUniversity of Hyogo (2014)
Institute of Physical and Chemical Research (2013)

Principal Investigator

KAWASAKI IKUTO  兵庫県立大学, 物質理学研究科, 助教 (90552307)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords重い電子系 / 隠れた秩序 / 異方的超伝導 / ウラン化合物 / ミュオン / URu2Si2 / 超伝導 / ミュオンスピン緩和法
Outline of Final Research Achievements

The heavy-fermion compound URu2Si2 shows a mysterious second-order transition at 17.5 K. Despite intensive studies for about three decades, the order parameter of the transition at 17.5 K has not yet been identified, and thus the ordered phase is referred to as the hidden order. In the present study, we have performed muon spin relaxation experiments in order to investigate the presence of a time-reversal symmetry-breaking field in the hidden order and superconducting states of URu2Si2. The development of a tiny static internal magnetic field is observed in the hidden order state. We also found that the internal field is further enhanced in the superconducting phase. These findings provide the basis for the understanding of the hidden order and superconducting states.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (3 results)

All 2014 2013

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Time-Reversal Symmetry in the Hidden Order and Superconducting States of URu2Si22014

    • Author(s)
      Ikuto Kawasaki, Isao Watanabe, Adrian Hillier, Dai Aoki
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 83 Issue: 9 Pages: 094720-094720

    • DOI

      10.7566/jpsj.83.094720

    • NAID

      210000133275

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Presentation] μSR study of the hidden order state in URu2Si22013

    • Author(s)
      I. Kawasaki, I. Watanabe, D. Aoki
    • Organizer
      The international Conference on Strongly Correlated Electron Systems
    • Place of Presentation
      東京大学(東京都)
    • Related Report
      2013 Research-status Report
  • [Presentation] μSRによる重い電子系超伝導体URu2Si2の研究2013

    • Author(s)
      川崎郁斗, 渡邊功雄, 網塚浩, 青木大
    • Organizer
      日本物理学会
    • Place of Presentation
      徳島大学(徳島県)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2020-05-15  

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