Anomalies in current-voltage characteristics of YBCO/PBCO/YBCO sandwich junctions

被引：0
|
作者：
Strbik, V [1 ]
Chromik, S [1 ]
Benacka, S [1 ]
Bari, M [1 ]
机构：
[1] UNIV CAMBRIDGE,DEPT MAT SCI & IRC SUPERCONDUCT,CAMBRIDGE CB2 3QZ,ENGLAND
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 1997年 / 106卷 / 3-4期
关键词：
74.50.+r; 74.76.Bz;
D O I：
10.1007/BF02399635
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The current-voltage characteristics (IVCs) of YBa2Cu3O7-x/PrBa2Cu3O7-x/YBa2Cu3O7-x sandwich junctions of dimensions 14x20 mu m(2) at the temperatures below 300 K were studied. A few types of pecularities (as sudden junction conductance increase, spreading of resistance, voltage jumps, regions of negative differential resistance, sample voltage polarity change at increasing positive bias current) were observed in IVCs of the sandwich junctions at high bias current ( above 15 mA). We found out that all these effects are connected with sample overheating by the bias current and the shape of the temperature dependence of the junction resistance.
引用
收藏
页码：333 / 337
页数：5
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