Spin-dependent current noises in transport through coupled quantum dots

被引：11

作者：

Luo, JunYan ^{[1
,2
]}

Li, Xin-Qi ^{[1
,2
]}

Yan, YiJing ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 34期

关键词：

D O I：

10.1088/0953-8984/20/34/345215

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Current fluctuations can provide additional insight into quantum transport in mesoscopic systems. The present work is carried out for the fluctuation properties of transport through a pair of coupled quantum dots which are connected with ferromagnetic electrodes. Based on an efficient particle-number-resolved master equation approach, we are concerned with not only fluctuations of the total charge and spin currents, but also of each individual spin-dependent component. As a result of competition among the spin polarization, Coulomb interaction, and dot-dot tunnel coupling, rich behaviors are found for the self- and mutual-correlation functions of the spin-dependent currents.

引用

页数：7

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