Anomalous Andreev Bound State in Noncentrosymmetric Superconductors

被引：151

作者：

Tanaka, Yukio ^{[1
]}

Mizuno, Yoshihiro ^{[1
]}

Yokoyama, Takehito ^{[2
]}

Yada, Keiji ^{[1
]}

Sato, Masatoshi ^{[3
]}

机构：

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

[2] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[3] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 09期

关键词：

WAVE SUPERCONDUCTORS;

D O I：

10.1103/PhysRevLett.105.097002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study edge states of noncentrosymmetric superconductors where spin-singlet d-wave pairing mixes with spin-triplet p (or f)-wave one by spin-orbit coupling. For d(xy)-wave pairing, the obtained Andreev bound state has an anomalous dispersion as compared to conventional helical edge modes. A unique topologically protected time-reversal invariant Majorana bound state appears at the edge. The charge conductance in the noncentrosymmetric superconductor junctions reflects the anomalous structures of the dispersions, particularly the time-reversal invariant Majorana bound state is manifested as a zero bias conductance peak.

引用

页数：4

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