VORTEX PINNING BY TWIN BOUNDARIES IN COPPER-OXIDE SUPERCONDUCTORS

被引：97
|
作者：
BLATTER, G
RHYNER, J
VINOKUR, VM
机构：
[1] ACAD SCI USSR,INST SOLID STATE PHYS,CHERNOGOLOVKA 142432,USSR
[2] ASEA BROWN BOVERI,CORP RES,CH-5405 BADEN,SWITZERLAND
来源：
PHYSICAL REVIEW B | 1991年 / 43卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.43.7826
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the pinning properties of twin boundaries in YBa2Cu3O7-delta single crystals within a collective-pinning theory. For small angles v between the magnetic field and the twin boundaries, the vortex lattice adjusts to the array of twinning planes. Above the bulk depinning temperature T(p), the pinning properties of the twin boundaries are enhanced as compared with the bulk pinning. The combined effects lead to an increased pinning of the vortex lattice at small angles v, explaining the narrow angular response observed recently in the resistive transition and in torque measurements.
引用
收藏
页码：7826 / 7830
页数：5
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