Spin-dependent current noises in transport through coupled quantum dots
arXiv:0909.0124 · doi:10.1088/0953-8984/20/34/345215
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.
15 pages, 4 figure, and 2 tables
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- Spin polarized current and shot noise in carbon nanotube quantum dot in the Kondo regime
- Full Counting statistics of level renormalization in electron transport through double quantum dots
- Real-time counting of single electron tunneling through a T-shaped double quantum dot system
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