PRESSURE STUDY OF THE PARACONDUCTIVITY OF HIGH-TC SUPERCONDUCTORS

被引：70
|
作者：
BORGES, HA [1 ]
CONTINENTINO, MA [1 ]
机构：
[1] UNIV FED FLUMINENSE,INST FIS,BR-24020 NITEROI,BRAZIL
来源：
SOLID STATE COMMUNICATIONS | 1991年 / 80卷 / 03期
关键词：
D O I：
10.1016/0038-1098(91)90180-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We measure the resistivity of several high T(c) ceramic superconductors (REBa2Cu3O7-delta, RE = Y, Yb, Gd and Er) under applied pressure. An analysis of the temperature derivative of the resistivity close to the critical temperature shows that the transition to the superconducting state occurs in two steps. We discuss the origin of this double transition and obtain the exponents associated with the paraconductivity which give information on the dimensionality of the critical fluctuations.
引用
收藏
页码：197 / 199
页数：3
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