PINNING AND IV CHARACTERISTICS OF A 2-DIMENSIONAL DEFECTIVE FLUX-LINE LATTICE

被引：124

作者：

SHI, AC

BERLINSKY, AJ

机构：

[1] Institute for Materials Research, McMaster University, Hamilton, Ont. L8S 4M1

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.67.1926

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a variational argument, we show that a two-dimensional (2D) crystal becomes defective in the presence of a random pinning potential. The threshold pinning force and flow properties of a plastically deformed crystal are studied using a perturbation theory valid for weak pinning potential and strong driving force. In the case of a 2D flux-line lattice, it is shown that dislocations introduce extra dissipation in the system, thus increasing the total pinning force, and resulting in nonlinear I-V characteristics.

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页码：1926 / 1929

页数：4

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