Influences of broken time-reversal symmetry on the dc Josephson effects in d-wave superconductors

被引：62

作者：

Tanaka, Y ^{[1
]}

Kashiwaya, S

机构：

[1] Grad Sch Sci & Technol, Dept Phys, Kawaguchi, Saitama 332, Japan

[2] CREST, Kawaguchi, Saitama 332, Japan

[3] Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA

[4] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 46401, Japan

[5] Electrotech Lab, Tsukuba, Ibaraki 3059568, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.58.R2948

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to examine the influences of the spatial dependence of the pair potential on the Josephson current, the de Josephson current in d-wave superconductors is calculated using self-consistently determined pal potentials. The results show that the suppression of the d-wave pair potential near the insulator does not have a serious effect on the properties of the Josephson current. On the other hand, drastic changes are obtained due to the inducement of a subdominant a-wave component, which spontaneously breaks time-reversal symmetry. In particular, a rapid enhancement of the Josephson current at low temperature predicted in previous formulas is strongly suppressed.

引用

页码：R2948 / R2951

页数：4

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