Josephson current in ferromagnetic d-wave superconductor/ferromagnetic d-wave superconductor junction

被引：4

作者：

Liao, Y. H. ^{[1
,2
]}

Dong, Z. C. ^{[1
]}

Yin, Z. F. ^{[1
,2
]}

Fu, H. ^{[1
]}

机构：

[1] Huaiyin Teachers Coll, Dept Phys, Huaian 223001, Peoples R China

[2] Yanbian Univ, Coll Sci, Dept Phys, Jilin Yanji 133002, Peoples R China

来源：

PHYSICS LETTERS A | 2008年 / 372卷 / 08期

基金：

中国国家自然科学基金;

关键词：

zeeman effect; ferromagnetic d-wave superconductor (FdS); Josephson current;

D O I：

10.1016/j.physleta.2007.09.031

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We solve a self-consistent equation for the d-wave superconducting gap and the effective exchange field in the mean-field approximation, study the Zeeman effects on the d-wave superconducting gap and thermodynamic potential. The Josephson currents in the d-wave superconductor (S)/insulating layer (I)/d-wave S junction are calculated as a function of the temperature, exchange field, and insulating barrier strength under a Zeeman magnetic field on the two d-wave Ss. It is found that the Josephson critical currents in d-wave S/d-wave S junction depend to a great extent on the relative orientation of the effective exchange field of the two S electrodes, and the crystal orientation of the d-wave S. The exchange field can under certain conditions enhance the Josephson critical current in a d-wave S/I/d-wave S junction. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1327 / 1332

页数：6

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