Nonlocal Andreev reflection and spin current in a three-terminal Aharonov-Bohm interferometer

被引：0
|
作者：
彭菊 [1 ]
郁华玲 [1 ]
王之国 [1 ]
机构：
[1] Department of Physics,Huaiyin Teachers College
来源：
Chinese Physics B | 2009年 / 18卷 / 12期
基金：
中国国家自然科学基金;
关键词：
nonlocal Andreev reflection; Aharonov-Bohm interferometer; spin current;
D O I：
暂无
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
This paper theoretically reports the nonlocal Andreev reflection and spin current in a normal metal-ferromagnetic metal-superconducting Aharonov-Bohm interferometer.It is found that the electronic current and spin current are sensitive to systematic parameters,such as the gate voltage of quantum dots and the external magnetic flux.The electronic current in the normal metal lead results from two competing processes:quasiparticle transmission and nonlocal Andreev reflection.The appearance of zero spin-up electronic current (or spin-down electronic current) signals the existence of nonlocal Andreev reflection,and the presence of zero electronic current results in the appearance of pure spin current.
引用
收藏
页码：5485 / 5490
页数：6
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