Effect of anisotropy on universal transport in unconventional superconductors

W. Wu, D. Branch, J. Carbotte

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We investigate the universal electronic transport for a mixed (Formula presented)-wave superconductor in the presence of an anisotropic elliptical Fermi surface. Similar to the universal low-temperature transport predicted in a (Formula presented)-wave superconductor with a circular Fermi surface, anisotropic universal features are found in the low-temperature microwave conductivity and thermal conductivity in the anisotropic system. The effects of anisotropy on the penetration depth, impurity induced (Formula presented) suppression, and the zero-frequency density of states are also considered. While a small amount of anisotropy can lead to a strong suppression of the effective scattering rate, and hence the density of states at zero frequency, experimental data suggest that large effects are restored by a negative (Formula presented)-component gap admixture.

Original languageEnglish
Pages (from-to)3417-3424
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume58
Issue number6
DOIs
Publication statusPublished - 1998 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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