Thermal conductivity study of Sr2RuO4 in oriented magnetic field

M. A. Tanatar, S. Nagai, Z. Q. Mao, Y. Maeno, T. Ishiguro

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7 Scopus citations

Abstract

Thermal conductivity κ was measured on high quality single crystals of Sr2RuO4, with Tc = 1.37 K close to the value for impurity free material (1.5 K). Linear decrease of κ/T in T is found below 1 K. Dependence of κ/T on magnetic field perpendicular to the conducting plane is consistent with the behavior of type II superconductor, giving HC1≈0.01 T and HC2=0.08 T. In parallel magnetic field κ/T vs. H dependence is principally different, showing rapid restoration of conductivity in narrow vicinity of the upper critical field. This behavior is in good agreement with a T-H phase diagram determined from the specific heat and AC susceptibility measurements and is assigned to the field-induced formation of a superconducting state with nodes in the gap.

Original languageEnglish (US)
Pages (from-to)1841-1844
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume341-348
Issue numberPART 2
DOIs
StatePublished - Jan 1 2000

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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