UPPER CRITICAL-FIELD OF D-WAVE SUPERCONDUCTORS

被引：23

作者：

WON, HK

MAKI, K

机构：

[1] Department of Physics, University of Southern California, Los Angeles

来源：

PHYSICA B | 1994年 / 199卷

关键词：

D O I：

10.1016/0921-4526(94)91835-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Within the weak-coupling model we study the upper critical field of a dx2-y2 superconductor in a magnetic field lying in the a-b plane and tilted by an angle theta from the a-axis. We find that the upper critical field exhibits four-fold symmetry and takes the maximum value when H parallel-to a. The anisotropy is about 10% at T = 0 K and decreases with increasing temperature and it vanishes completely at T = T(c). We also study the effect of impurity scattering on upper critical field. We find a quasi-scaling law as found for the upper critical field in heavy fermion superconductors.

引用

页码：353 / 355

页数：3

共 8 条

[1]

ABRIKOSOV AA, 1961, ZH EKSP TEOR FIZ, V12, P1243

[2] CONSERVING APPROXIMATIONS FOR STRONGLY CORRELATED ELECTRON-SYSTEMS - BETHE-SALPETER-EQUATION AND DYNAMICS FOR THE TWO-DIMENSIONAL HUBBARD-MODEL [J].