Josephson effect due to odd-frequency pairs in diffusive half metals

被引：161

作者：

Asano, Yasuhiro ^{[1
]}

Tanaka, Yukio

Golubov, Alexander A.

机构：

[1] Hokkaido Univ, Dept Appl Phys, Sapporo, Hokkaido 0608628, Japan

[2] Nagoya Univ, CREST, JST, Nagoya, Aichi 4648603, Japan

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

[4] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.98.107002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Motivated by a recent experiment [Keizer et al., Nature (London) 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions using the recursive Green function method. The spin-flip scattering at the junction interfaces opens the Josephson channel of the odd-frequency spin-triplet Cooper pairs. As a consequence, the local density of states in a half metal has a large peak at the Fermi energy. Therefore the odd-frequency pairs can be detected experimentally by using the scanning tunneling spectroscopy.

引用

页数：4

共 23 条

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