ANOMALOUS BEHAVIOR OF THE CRITICAL-CURRENT OF A GRAIN-BOUNDARY JOSEPHSON-JUNCTION IN A BULK (BA,K)BIO3 BICRYSTAL

被引：0
|
作者：
ROSHCHIN, IV
STEPANKIN, VN
YAKOVETS, YP
BARANOV, MA
KUZNETSOV, AV
ZHIGUNOV, DI
SHIRYAEV, SV
机构：
[1] MOSCOW ENGN PHYS INST, MOSCOW 115409, RUSSIA
[2] BELARUS ACAD SCI, INST SOLID STATE & SEMICOND, MINSK, BELARUS
来源：
JETP LETTERS | 1994年 / 59卷 / 03期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The electrical transport properties of grain boundaries in bulk bicrystals of the oxide superconductor Ba0.55K0.45BiO3 have been studied. The grain boundary in these bicrystals is a Josephson barrier. Near the transition temperature, the critical current of this barrier has a power-law temperature dependence with a critical exponent of 3/2. The critical current of a grain boundary exhibits a nonmonotonic behavior as the temperature is lowered. A possible interpretation of this behavior is discussed.
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页码：168 / 172
页数：5
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