Influence of Van Hove singularities on the thermal conductivity of high-T-c superconductors

被引：20
|
作者：
Houssa, M [1 ]
Ausloos, M [1 ]
Durczewski, K [1 ]
机构：
[1] POLISH ACAD SCI,INST LOW TEMP & STRUCT RES,PL-50950 WROCLAW,POLAND
来源：
PHYSICAL REVIEW B | 1996年 / 54卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.54.6126
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We calculate the electronic contribution kappa(e) to the thermal conductivity of a two-dimensional d(x2-y2)-wave superconductor presenting logarithmic Van Hove singularities (VHS) in the density of states. The influence of the position of these VHS from the Fermi level on the thermal conductivity peak observed below T-c is investigated. Experimental results on different YBa2Cu3O7-x compounds with various oxygen stoichiometry x can be well described by this model with reasonable values of the physical parameters.
引用
收藏
页码：6126 / 6128
页数：3
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