Quasi-particle density in Sr2RuO4 probed by means of the phonon thermal conductivity

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

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The thermal conductivity of Sr2RuO4 along the least conducting direction perpendicular to the RuO2 plane has been studied down to 0.3 K. In this configuration the phonons remain the dominant heat carriers down to the lowest temperature, and their conductivity in the normal state is determined by the scattering on conduction electrons. We show that the phonon mean free path in the superconducting state is sensitive to the density of the quasi-particles in the bulk. An unusual magnetic field dependence of the phonon thermal conductivity is ascribed to the anisotropic superconducting gap structure in Sr2RuO4.

Original languageEnglish (US)
Pages (from-to)7371-7381
Number of pages11
JournalJournal of Physics Condensed Matter
Volume14
Issue number31
DOIs
StatePublished - Aug 12 2002

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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