SIGN CHANGE OF THE FLUX-FLOW HALL RESISTANCE IN HIGH-TC SUPERCONDUCTORS

被引：51
|
作者：
FREIMUTH, A
HOHN, C
GALFFY, M
机构：
[1] II. Physikalisches Institut, Universität Köln
来源：
PHYSICAL REVIEW B | 1991年 / 44卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.44.10396
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We consider a contribution to the flux-flow Hall effect that arises from the existence of large thermomagnetic effects in the mixed state of the high-T(c) superconductors. From the measured values of the Seebeck and Nernst-Ettingshausen effects we find that this contribution is as large as the direct flux-flow contribution to the Hall effect, but has the opposite sign for a positive Seebeck coefficient. Therefore it leads to a sign change of the Hall resistance. A calculation of the temperature and field dependence of the Hall resistivity yields good agreement with the data.
引用
收藏
页码：10396 / 10399
页数：4
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