DYNAMICS OF A DISORDERED FLUX LINE LATTICE

被引：435
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.
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页码：2617 / 2620
页数：4
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