Josephson effect in unconventional-superconductor/ferromagnet/unconventional-superconductor junctions

被引：37

作者：

Tanaka, Y ^{[1
]}

Kashiwaya, S

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[2] CREST, Japan Sci & Technol Corp, Osaka, Japan

[3] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1999年 / 68卷 / 11期

关键词：

Josephson effect; ferromagnet; unconventional superconductor; zero-energy states;

D O I：

10.1143/JPSJ.68.3485

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

To reveal the influence of the exchange interaction on the Josephson effect, the de Josephson current in unconventional -superconductor/ferromagnet/unconventional-superconductor junctions is studied. When the two superconductors have cl-wave symmetry, the Josephson current is drastically suppressed with the increase in exchange interaction. On the other band, when the two superconductors have different parities, e.g., s-wave and p-wave; an enhancement of the Josephson current is realized with the increment of the exchange interaction due to the break down of SU(2) symmetry in the spin space.

引用

页码：3485 / 3488

页数：4

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