Time-reversal symmetry in the hidden order and superconducting states of URu2Si2

Ikuto Kawasaki, Isao Watanabe, Adrian Hillier, Dai Aoki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The presence of a time-reversal symmetry-breaking field in the hidden order and superconducting states of URu2Si2 has been studied by muon spin relaxation (μSR) spectroscopy. The development of an internal magnetic field has been observed in the hidden order state. Longitudinal-field μSR experiments have shown that the internal magnetic field is static on the time scale of μSR. The presence of both a- and c-axis components of the internal magnetic field at the muon sites was revealed by transverse- field μSR experiments. This is in contrast to the pressure-induced antiferromagnetic state, where the internal magnetic field is parallel to the c-axis. We also found that the muon spin relaxation rate is further enhanced below the superconducting phase transition temperature, indicating further development of the internal magnetic field.

Original languageEnglish
Article number094720
Journaljournal of the physical society of japan
Volume83
Issue number9
DOIs
Publication statusPublished - 2014 Sep 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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