A new broken U(1)-symmetry in extreme type-II superconductors

被引：30

作者：

Nguyen, AK ^{[1
]}

Sudbo, A

机构：

[1] Norwegian Univ Sci & Technol, N-7034 Trondheim, Norway

[2] CALTECH, Pasadena, CA 91125 USA

来源：

EUROPHYSICS LETTERS | 1999年 / 46卷 / 06期

关键词：

D O I：

10.1209/epl/i1999-00332-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A phase transition within the molten phase of the Abrikosov vortex system without disorder in extreme type-II superconductors is found via large-scale Monte-Carlo simulations. It involves breaking a U(1)-symmetry, and has a aero-field counterpart, unlike vortex lattice melting. Its hallmark is the loss of number-conservation of connected vortex paths threading the entire system in any direction, driving the vortex line tension to zero. This tension plays the role of a generalized "stiffness" of the vortex liquid, and serves as a probe of the loss of order at the transition, where a, weak specific heat anomaly is found.

引用

页码：780 / 786

页数：7

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