FLUX-FLOW HALL-EFFECT IN SUPERCONDUCTING TL2BA2CACU2O8 FILMS

被引:133
作者
HAGEN, SJ
LOBB, CJ
GREENE, RL
EDDY, M
机构
[1] SUPERCONDUCTOR TECHNOL INC,SANTA BARBARA,CA 93111
[2] IBM CORP,DIV RES,YORKTOWN HTS,NY 10598
来源
PHYSICAL REVIEW B | 1991年 / 43卷 / 07期
关键词
D O I
10.1103/PhysRevB.43.6246
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In both high-T(c) and low-T(c) superconductors, the Hall effect in the mixed state often shows a sign reversal below T(c) that contradicts standard theories for flux-vortex motion. We have measured the mixed-state Hall effect in high-quality superconducting films of Tl2Ba2CaCu2O8, and find that the Hall angle alpha below T(c) consists of two components: A field-independent component exhibits a complicated temperature dependence, including a sign change near T(c), while a second component with very weak temperature dependence is linear in field and resembles the normal-state Hall angle. The field independence of the sign-reversing component is evidence for vortex motion, and can be understood in terms of simple drag forces acting on vortices.
引用
收藏
页码:6246 / 6248
页数:3
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