Josephson current in unconventional superconductors through an Anderson impurity

被引：9

作者：

Avishai, Y ^{[1
]}

Golub, A

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.61.11293

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Josephson current for a system consisting of an Anderson impurity weakly coupled to two unconventional superconductors is studied and shown to be driven by a surface zero energy (midgap) bound state. The repulsive Coulomb interaction in the dot can turn a pi junction into a 0 junction. This effect is more pronounced in p-wave superconductors while in high-temperature superconductors with d(x2-y2) symmetry it can exist for rather large artificial centers at which tunneling occurs within a finite region.

引用

页码：11293 / 11296

页数：4

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