0-π transitions in mesoscopic Josephson junctions with magnetic impurity interlayers

被引：2
作者：
Wang, Jing-Chao [1 ]
Zha, Guo-Qiao [1 ]
Zhou, Shi-Ping [1 ]
机构：
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2012年 / 483卷
基金：
高等学校博士学科点专项科研基金; 美国国家科学基金会;
关键词：
Mesoscopic Josephson junction; Magnetic impurity; 0-pi transition; SUPERCONDUCTORS; STATES; LOOPS;
D O I：
10.1016/j.physc.2012.07.010
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic impurity effect on the Josephson current through mesoscopic tunnel junctions is investigated by numerically solving the Bogoliubov-de Gennes equations self-consistently. It is found that the presence of magnetic impurities in the middle layers significantly affects the current flowing across the junctions with d-wave superconductors. A 0 or pi state for the current-phase relation with a period of 2 pi can be realized when the thickness of middle magnetic impurity layers is varied. Moreover, the 0-pi or pi-0 transitions are demonstrated with increasing the temperature for Josephson junctions with specific interlayer thicknesses. (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：79 / 81
页数：3
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