Spin-dependent current noises in transport through coupled quantum dots
Mesoscale and Nanoscale Physics
2009-09-02 v1 Statistical Mechanics
Abstract
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.
Cite
@article{arxiv.0909.0124,
title = {Spin-dependent current noises in transport through coupled quantum dots},
author = {JunYan Luo and Xin-Qi Li and YiJing Yan},
journal= {arXiv preprint arXiv:0909.0124},
year = {2009}
}
Comments
15 pages, 4 figure, and 2 tables