THERMAL-CONDUCTIVITY ANISOTROPY IN SUPERCONDUCTING UPT3

被引：26

作者：

FLEDDERJOHANN, A

HIRSCHFELD, PJ

机构：

[1] Dept. of Physics, Univ. of Florida, Gainesville

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 94卷 / 03期

关键词：

SUPERCONDUCTORS; HEAVY FERMIONS; HEAT CONDUCTION;

D O I：

10.1016/0038-1098(95)00050-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Recent thermal conductivity measurements on UPt3 single crystals by Lussier et al. indicate the existence of a strong b-c anisotropy in the superconducting state. We calculate the thermal conductivity in various unconventional candidate states appropriate for the UPt3 ''B phase'' and compare with experiment, specifically the E(2u) and E(1g) (1,i) states predicted in some Ginzburg-Landau analyses of the phase diagram. For the simplest realizations of these states over spherical or ellipsoidal Fermi surfaces, the normalized E(2u) conductivity is found, surprisingly, to be completely isotropic. We discuss the effects of inelastic scattering and realistic Fermi surface anisotropy, and deduce constraints on the symmetry class of the UPt3 ground state.

引用

页码：163 / 167

页数：5

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