Paramagnetism of a hard superconductor in crossed magnetic fields

被引：20
|
作者：
Fisher, LM [1 ]
Kalinov, AV [1 ]
Savelev, SE [1 ]
Voloshin, IF [1 ]
Yampolskii, VA [1 ]
机构：
[1] UKRAINIAN ACAD SCI,INST RADIOPHYS & ELECT,UA-310085 KHARKOV,UKRAINE
来源：
SOLID STATE COMMUNICATIONS | 1997年 / 103卷 / 05期
关键词：
high-T-c superconductors; flux pinning and creep;
D O I：
10.1016/S0038-1098(97)00188-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The d.c. magnetic moment along the d.c. magnetic field is observed to be suppressed under the action of the perpendicular a.c. magnetic field. Moreover, this moment changes its sign at some value of the a.c. magnetic field amplitude and becomes paramagnetic. This behavior can be explained in the framework of a two velocity hydrodynamic model of the critical state of a hard superconductor in crossed magnetic fields. The physical nature of this phenomenon is connected with the homogeneity of the vortex density inside a superconductor at these condition. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：313 / 317
页数：5
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