Magnetic field effect in Josephson tunneling between d-wave superconductors

被引：12

作者：

Yan, XZ ^{[1
]}

Hu, CR

机构：

[1] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.83.1656

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic field effects in the Josephson tunneling between two d-wave superconductors are investigated. For a junction with a flat {001}\{110} or {100}\{110} interface under a magnetic field B, the tunneling current is predominantly mediated by the midgap states. The energies of these states shift in proportion to B and the sign of their momenta along the interface, leading to a skewed occupation of these states. The tunneling current density therefore is a linear function of B for weak B. Apart from the Fraunhofer factor, the total critical current depends on B also through this current density. This prediction can explain a published measurement.

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收藏

页码：1656 / 1659

页数：4

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