Tilting instability and other anomalies in the flux lattice in some magnetic superconductors

被引：13

作者：

Ng, TK ^{[1
]}

Varma, CM ^{[1
]}

机构：

[1] AT&T BELL LABS,LUCENT TECHNOL,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.78.3745

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The flux-line lattice in the compound ErNi2B2C, which has a tendency to ferromagnetic order in the a-b plane, is studied with the external magnetic field direction close to the c axis. We show the existence of an instability, where the direction of flux lines spontaneously tilts away from that of the applied field as a prelude to the onset of ferromagnetic order and the predicted spontaneous vortex phase. This tilting instability is accompanied by a decreasing longitudinal correlation length of the flux lattice, as observed.

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页码：3745 / 3748

页数：4

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