Optically induced spin-polarized transport in a two-level quantum dot

被引：6
|
作者：
Ke, Sha-Sha [1 ,2 ]
Lue, Hai-Feng [2 ,3 ]
Li, Gao-Xiang [1 ]
机构：
[1] Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China
[2] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China
[3] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2009年 / 105卷 / 02期
关键词：
quantum dots; shot noise; spin polarised transport;
D O I：
10.1063/1.3072629
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We analyze theoretically the pumped spin current and its shot noise spectra in a two-level quantum dot system, where the dot is irradiated by circularly polarized light. The device operates at a certain chemical potential configuration in the absence of magnetic field and ferromagnetic spin injection. The spin-resolved shot noise can be modulated by the light nonmonotonously and always indicates a sub-Poissonian type.
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收藏
页数：7
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