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Spin-dependent current noises in transport through coupled quantum dots

Authors
  • Luo, JY
  • Li, XQ
  • Yan, YJ
Publication Date
Jan 01, 2008
Source
Knowledge Repository of SEMI,CAS
Keywords
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Unknown
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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.

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