Anisotropic s-wave superconductivity in borocarbides LuNi2B2C and YNi2B2C -: art. no. 140502

被引：94

作者：

Maki, K

Thalmeier, P

Won, H

机构：

[1] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[2] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA

[3] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

[4] Hallym Univ, Dept Phys, Chunchon 200702, South Korea

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.65.140502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The symmetry of superconductivity in borocarbides LuNi2B2C and YNi2B2C is an outstanding issue. Here an anisotropic s-wave order parameter (or s+g model) is proposed for LuNi2B2C and YNi2B2C. In spite of a substantial s-wave component, the present superconducting order parameter Delta(k) has nodes and gives rise to the rootH dependent specific heat in the vortex state (the Volovik effect). This model predicts the fourfold symmetry both in the angular dependent thermal conductivity and in the excess Dingle temperature in the vortex state, which should be readily accessible experimentally.

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页码：1 / 4

页数：4

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