Entropy induced fragmentation of the locked vortex state in YBa2Cu3Oy single crystals

被引：1
作者：
Zhukov, AA [1 ]
Küpfer, H
de Groot, PAJ
Wolf, T
机构：
[1] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
[2] Forschungszentrum Karlsruhe, Inst Tech Phys, D-76021 Karlsruhe, Germany
[3] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 117234, Russia
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 1999年 / 117卷 / 5-6期
关键词：
D O I：
10.1023/A:1022578724788
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using a high angular resolution vector magnetometer we have studied the components of the magnetic moment parallel and transverse to the CuO-planes. The full shielding of the transverse field component originating from the infinite tilt modulus of the vortex locked state, is observed for the lowest fields only. We relate the suppression of the transverse shielding to entropy induced fragmentation of the locked stare by thermally activated kinks. We introduce a simple model that accounts for the reduced shielding as well as describing the angular behaviour of the critical current.
引用
收藏
页码：1513 / 1517
页数：5
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