Anisotropic inelastic scattering and its interplay with superconductivity in URu2 Si2

Zengwei Zhu, Elena Hassinger, Zhu'An Xu, Dai Aoki, Jacques Flouquet, Kamran Behnia

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

In contrast to almost all anisotropic superconductors, the upper critical field of URu2 Si2 is larger when the field is oriented along the less conducting direction. We present a study of resistivity and Seebeck coefficient extended down to sub-Kelvin temperature range uncovering a singular case of anisotropy. When the current is injected along the c axis URu2 Si2 behaves as a low-density Fermi liquid. When it flows along the a axis, even in presence of a large field, resistivity remains T-linear down to Tc and the Seebeck coefficient undergoes a sign change at very low temperatures. We conclude that the characteristic energy scale is anisotropic and vanishingly small in the basal plane.

Original languageEnglish
Article number172501
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number17
DOIs
Publication statusPublished - 2009 Nov 2
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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