Hidden Orbital Order in U Ru2 Si_2

  title={Hidden Orbital Order in U Ru2 Si\_2},
  author={Premala Chandra and Piers Coleman and J A Mydosh and Vikram Tripathi},
.S.A .S.A W hen m atter is cooled from high tem peratures, collective instabilities develop am ongst its constituent particles that lead to new kinds of order. 1 A n anom aly in the speci(cid:12)c heat is a classic signature of this phenom enon. U su-ally the associated order is easily identi(cid:12)ed, but som etim es its nature rem ains elusive. T he heavy ferm ion m etal U R u 2 Si 2 is one such exam ple, w here the order responsible for the sharp speci(cid:12)c heat anom aly at T 0 = 17 K… 
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  • BroholmLin Kjems
  • Physics
    Physical review. B, Condensed matter
  • 1991
P peaks have not been identified in the magnetic excitation spectra, but instead a continuous spectrum of scattering peaked around the ordering wave vector indicates the presence of overdamped antiferromagnetically correlated spin fluctuations.