Observation of induced Chern-Simons term in P- and T-violating superconductors

被引：54

作者：

Goryo, J ^{[1
]}

Ishikawa, K ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan

来源：

PHYSICS LETTERS A | 1999年 / 260卷 / 3-4期

关键词：

D O I：

10.1016/S0375-9601(99)00538-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show in this letter that P- and T-odd terms of the electromagnetic potentials (P; parity, Tt time reversal) are induced and lead an unusual phenomenon in P- and T-violating superconductors discovered recently. The Ginzburg-Landau action includes this term in a gauge invariant manner. The coefficient of the term is nearly topological invariant with a small correction and equals to the fine structure constant approximately. The unusual 'Hall effect' without external magnetic field could be observed by a SQUID. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：294 / 299

页数：6

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