Vortices with fractional flux in two-gap superconductors and in extended Faddeev model

被引：286

作者：

Babaev, E

机构：

[1] Uppsala Univ, Inst Theoret Phys, S-75108 Uppsala, Sweden

[2] NORDITA, DK-2100 Copenhagen, Denmark

[3] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.89.067001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss linear topological defects allowed in two-gap superconductors and equivalent extended Faddeev model. We show that, in these systems, there exist vortices which carry an arbitrary fraction of magnetic flux quantum. Besides that, we discuss topological defects which do not carry magnetic flux and describe features of ordinary one-magnetic-flux-quantum vortices in the two-gap system. The results could be relevant for the newly discovered two-band superconductor MgB2.

引用

页数：4

共 26 条

[1]

ABRIKOSOV AA, 1957, SOV PHYS JETP-USSR, V5, P1174

[2]

ASHCROFT NW, 2000, J PHYS A, V129, P12

[3] Hidden symmetry and knot solitons in a charged two-condensate Bose system [J].