Berry phase in magnetic superconductors

被引：51

作者：

Murakami, S ^{[1
]}

Nagaosa, N

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] CERC, Tsukuba, Ibaraki 3058562, Japan

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.90.057002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In magnetic systems, electronic bands often acquire nontrivial topological structure characterized by gauge flux distribution in momentum k space. It sometimes follows that the phase of the wave functions cannot be defined uniquely over the whole Brillouin zone. In this Letter, we develop a theory of superconductivity in the presence of this gauge flux both in two- and three-dimensional systems. It is found that the superconducting gap has "nodes" as a function of k where the Fermi surface is penetrated by a gauge string.

引用

页数：4

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