Inelastic x-ray scattering measurements of phonon dynamics inURu2Si2 Academic Article uri icon

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abstract

  • We report high-resolution inelastic x ray scattering measurements of the acoustic phonons of URu2Si2. We observe minimal change in the phonon structure upon entering the Hidden Order phase. At all temperatures, the longitudinal acoustic phonons are anomalously broad at low q. There is no evidence to suggest that the increase in thermal conductivity in the Hidden Order phase is driven by a change in phonon dispersions or lifetimes. A more likely explanation is that the magnetic excitations in the Hidden Order state contribute to thermal transport.

authors

  • Gardner, DR
  • Bonnoit, CJ
  • Chisnell, R
  • Said, AH
  • Leu, BM
  • Williams, TJ
  • Luke, Graeme
  • Lee, YS

publication date

  • February 11, 2016