THERMALLY ACTIVATED FLUX MOTION IN ARTIFICIALLY GROWN YBA2CU3O7/PRBA2CU3O7 SUPERLATTICES

被引：176
|
作者：
BRUNNER, O
ANTOGNAZZA, L
TRISCONE, JM
MIEVILLE, L
FISCHER, O
机构：
[1] Département de Physique de la Matière Condensée, Université de Genève, 1211 Genève 4
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.67.1354
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have studied the thermally activated flux-flow resistance in YBa2Cu3O7/PrBa2Cu3O7 (YBCO/PrBCO) artificial superlattices in magnetic fields perpendicular to the a-b plane. We find for multilayers with thick enough (> 24 angstrom) insulating PrBCO layers and for YBCO thicknesses smaller than 300 angstrom that the activation energy has a logarithmic magnetic-field dependence and that it is proportional to the YBCO thickness in the multilayer.
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页码：1354 / 1357
页数：4
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