Quantum Criticality in URhGe - UIrGe system

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<p>We have investigated field-temperature (B - T) phase diagram of UIr1-xRhxGe system with AFM/FM boundary. In a FM superconductor URhGe, the enhanced quantum tricritical fluctuations were reported. In contrast, along Rh doping in an AFM UIrGe, the usual quantum critical behavior is confirmed for the AFM/FM quantum critical point. We conclude that magnetic fluctuations in UIrGe are broken by opening of the AFM gap at TN. AFM gap closing and recovery of the magnetic fluctuations at low temperatures in UIrGe are expected by magnetic field along the b-axis at Bb,crit and by external pressure. We have emphasized a clear connection between the characteristic Tmax and metamagnetic field Bb,crit creating the Q-phase dome. We recognized presence of maximum at Tmax in static susceptibility Chib can be a good test of the criticality/tricriticality boundaries through the UCoGe - URhGe - UIrGe system.</p>

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詳細情報 詳細情報について

  • CRID
    1390282680936521728
  • NII論文ID
    130006244427
  • DOI
    10.11316/jpsgaiyo.71.2.0_1760
  • ISSN
    21890803
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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