Spin pump effects on the spin current through two coupled quantum dots

被引：4
|
作者：
Pan, H. [1 ,2 ]
Duan, S. -Q. [2 ]
Zhao, L. -N. [3 ]
Chu, W. -D. [2 ]
Zhang, W. [2 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Dept Phys, Beijing 100083, Peoples R China
[2] Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China
[3] Atomistix Asia Pacific Pte Ltd, Unit 106, Singapore 637722, Singapore
来源：
EUROPEAN PHYSICAL JOURNAL B | 2008年 / 62卷 / 01期
关键词：
D O I：
10.1140/epjb/e2008-00130-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We theoretically study the spin pump effects of the rotating magnetic field on the spin current through two coupled quantum dots. Owing to the interdot coupling, two molecular states with different bands can be formed, resulting asymmetric spin current peaks. The possibility of manipulating the spin current is explored by tuning the strength, the frequency, and the direction of the rotating magnetic field. The number and location of the spin current peaks can be controlled by making use of various tunings. Furthermore, the normal 2 pi period of the spin current with respect to the magnetic flux can be destroyed by the interdot coupling.
引用
收藏
页码：71 / 76
页数：6
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