Details of sample dependence and transport properties of URu 2Si2

Tatsuma D. Matsuda, Elena Hassinger, Dai Aoki, Valentin Taufour, Georg Knebel, Naoyuki Tateiwa, Etsuji Yamamoto, Yoshinori Haga, Yoshichika Onuki, Zachary Fisk, Jacques Flouquet

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Resistivity and specific heat measurements were performed in the low carrier unconventional superconductor URu2Si2 on various samples with very different qualities. The superconducting transition temperature (TSC) and the hidden order transition temperature (T HO) of these crystals were evaluated as a function of the residual resistivity ratio (RRR). In high quality single crystals the resistivity does not seem to follow a T2 dependence above TSC, indicating that the Fermi liquid regime is restricted to low temperatures. However, an analysis of the isothermal longitudinal magnetoresistivity points out that the T2 dependence may be "spoiled" by residual inhomogeneous superconducting contribution. We discuss a possible scenario concerning the distribution of TSC related with the fact that the hidden order phase is very sensitive to the pressure inhomogeneity.

Original languageEnglish
Article number114710
Journaljournal of the physical society of japan
Volume80
Issue number11
DOIs
Publication statusPublished - 2011 Nov
Externally publishedYes

Keywords

  • Hidden order
  • Resistivity
  • Specific heat
  • Superconductivity
  • URu Si

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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