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

被引：0
|
作者：
H. Pan
S.-Q. Duan
L.-N. Zhao
W.-D. Chu
W. Zhang
机构：
[1] Beijing University of Aeronautics and Astronautics,Department of Physics
[2] Institute of Applied Physics and Computational Mathematics,undefined
[3] Atomistix Asia Pacific Pte Ltd,undefined
[4] Unit 106,undefined
[5] Innovation Center Block 1,undefined
[6] 16,undefined
来源：
The European Physical Journal B | 2008年 / 62卷
关键词：
73.63.-b Electronic transport in nanoscale materials and structures; 72.25.Mk Spin transport through interfaces; 85.75.-d Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields; 85.65.+h Molecular electronic devices;
D O I：
暂无
中图分类号：
学科分类号：
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 2π period of the spin current with respect to the magnetic flux can be destroyed by the interdot coupling.
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页码：71 / 76
页数：5
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