DYNAMICS OF A DISORDERED FLUX LINE LATTICE

被引：436

作者：

BHATTACHARYA, S

HIGGINS, MJ

机构：

[1] NEC Research Institute, Princeton, NJ 08540

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.70.2617

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Flow behavior of a flux line lattice in the layered superconductor 2H-NbSe2 is studied with a magnetic field parallel to the layers in the vicinity of a pronounced peak effect. A striking crossover in the current-voltage characteristics is observed as the system enters the peak regime. The results yield a nonequilibrium phase diagram where conventional depinning of an elastic medium occurs for a rigid lattice. A defective (plastic) flow instability occurs as the lattice softens, but heals at large drives. This defective flow dominates the dynamics for a very soft lattice.

引用

页码：2617 / 2620

页数：4

共 26 条

[1]

ANDERSON PW, 1984, BASIC NOTIONS CONDEN, P162

[2] DISLOCATION-MEDIATED VORTEX-LATTICE MELTING IN THIN-FILMS OF ALPHA-NB3GE [J].