EFFECT OF SURFACE-BARRIER ON THE VORTEX RELAXATION IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引:1
作者
BURLACHKOV, L
机构
[1] Department of Physics, Bar-Ilan University, Ramat-Gan
来源
PHYSICA B | 1994年 / 194卷
关键词
D O I
10.1016/0921-4526(94)91410-9
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The rate of vortex relaxation over the surface barrier in HTSC is found. For the flux edt over the surface barrier the magnetization M depends logarithmically on time whereas for the case of flux entry M is a strongly non-linear function of In t. The initial relaxation rate, dM/d ln t, Proves to be much larger for flux entry than for exit in contrast to the case of the conventional bulk creep (where these rates are approximately equal). The competitive interplay between such a surface relaxation and the usual bulk one, which results in a crossover in the M(In t) curve, is duscussed.
引用
收藏
页码:1821 / 1822
页数:2
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