EFFECTS OF THE ANISOTROPY ON THE NONOHMIC BEHAVIOR IN HIGH-TC SUPERCONDUCTORS

被引：20
|
作者：
PARACCHINI, C
ROMANO, L
机构：
[1] Dipartimento di Fisica, Universita' di Parma, Parma
来源：
PHYSICA C | 1992年 / 191卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(92)90631-L
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Current-voltage characteristics in YBCO and BSCCO, at temperatures near the superconducting transition, exhibit non-Ohmic responses with power dependence V = AI(alpha(T)). The comparison of the alpha(T) trends reported for several crystals, films and ceramic samples evidences behaviour which differ in the compounds independently on the sample features. A development of the Kosteritz-Thouless model for quasi-bidimensional systems is proposed and a dependence of the non-Ohmic behaviour on the anisotropy of the material is obtained.
引用
收藏
页码：72 / 76
页数：5
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