Current fluctuation in high-Tc superconductors

被引：0
|
作者：
Asai, T [1 ]
Yoshida, N
Tanaka, Y
Inoue, J
Kashiwaya, S
机构：
[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648063, Japan
[2] JST, Japan Sci & Technol Corp, CREST, Yokohama, Kanagawa, Japan
[3] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2001年 / 62卷 / 1-2期
关键词：
superconductors; electrical conductivity; transport properties;
D O I：
10.1016/S0022-3697(00)00141-4
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We study the current fluctuation in normal metal/ferromagnetic insulator/high T-c superconductor junctions by calculating the shot noise for various transparencies of the junctions. The formation of zero energy state (ZES) at the interface influences the current fluctuation significantly. In the tunneling limit. the ratio of the noise power to current becomes 0 at zero voltage, when the ZES is formed at the interface. In the presence of a ferromagnetic insulator, the ratio deviates from 0 even for the tunneling limit. (C) 2000 Elsevier Science Ltd. All rights reserved.
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页码：261 / 264
页数：4
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