Mesoscopic fluctuations of Josephson current in high-Tc superconductor junctions

被引：0
|
作者：
Sakamoto, K
Asano, Y
Tanaka, Y
Tsuchiura, H
Inoue, J
Kashiwaya, S
机构：
[1] Hokkaido Univ, Dept Appl Phys, Sapporo, Hokkaido 0608628, Japan
[2] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan
[3] SISSA, I-34014 Trieste, Italy
[4] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 30585, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 412卷
关键词：
Josephson current; mesoscopic fluctuation; zero-energy state;
D O I：
暂无
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The dc Josephson current and its fluctuations in superconductor/dirty normal metal/superconductor junctions are studied numerically by using the recursive Green function method, where a d-wave pairing symmetry is assumed in superconductors as it is in high-T-c materials. The Josephson current is sensitive to the orientation angle (alpha) between the crystalline axis of the high-T-c superconductors and the normal of the junction interface. When the orientation angle is pi/4, the fluctuations of the Josephson current become larger than those with alpha = 0 because of the zero-energy state formed at junction interfaces. (C) 2004 Elsevier B.V. All rights reserved.
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页码：221 / 224
页数：4
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