Field reentrance of the hidden order state of URu2Si2 under pressure

  • Aoki D
  • Bourdarot F
  • Hassinger E
 et al. 
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Abstract

Combination of neutron scattering and thermal expansion measurements under pressure shows that the so-called hidden order phase of URu2Si2 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 Q(0) = (1, 0, 0) under field which is correlated with the collapse of the AF Bragg reflections at Q(0).

Author-supplied keywords

  • Electronic structure
  • Heavy fermion
  • Hidden order
  • Magnetism
  • Phase transition
  • URu2Si2

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Authors

  • Dai Aoki

  • Frédéric Bourdarot

  • Elena Hassinger

  • Georg Knebel

  • Atsushi Miyake

  • Stéphane Raymond

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