ac-Driven double quantum dots as spin pumps and spin filters

被引：132

作者：

Cota, E ^{[1
]}

Aguado, R

Platero, G

机构：

[1] Univ Nacl Autonoma Mexico, Ctr Ciencias Mat Condensada, Ensenada, Baja California, Mexico

[2] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.94.107202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose and analyze a new scheme of realizing both spin filtering and spin pumping by using ac-driven double quantum dots in the Coulomb blockade regime. By calculating the current through the system in the sequential tunneling regime, we demonstrate that the spin polarization of the current can be controlled by tuning the parameters (amplitude and frequency) of the ac field. We also discuss spin relaxation and decoherence effects in the pumped current.

引用

页数：4

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