Field reentrance of the hidden order state of URu2Si2 under pressure

Dai Aoki, Frédéric Bourdarot, Elena Hassinger, Georg Knebel, Atsushi Miyake, Stéphane Raymond, Valentin Taufour, Jacques Flouquet

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34 Citations (Scopus)


Combination of neutron scattering and thermal expansion measurements under pressure shows that the so-called hidden order phase of URu2Si 2 reenters in magnetic field when antiferromagnetism (AF) collapses at HAF(T). Macroscopic pressure studies of the HO-AF boundaries were realized at different pressures via thermal expansion measurements under magnetic field using a strain gauge. Microscopic proof at a given pressure is the reappearance of the resonance at Q0 = (1,0,0) under field which is correlated with the collapse of the AF Bragg reflections at Qo.

Original languageEnglish
Article number053701
JournalJournal of the Physical Society of Japan
Issue number5
Publication statusPublished - 2009 May


  • Electronic structure
  • Heavy fermion
  • Hidden order
  • Magnetism
  • Phase transition
  • URuSi


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