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Current and Noise in a FM/quantum dot/FM System

F. M. Souza·J. C. Egues·A. P. Jauho
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Abstract

Using the Keldysh nonequilibrium technique we calculate current, noise and Fano factor in a ferromagnetic(FM)-quantum dot-ferromagnetic(FM) system with Coulomb interaction and spin-flip scattering in the dot. The lead polarizations are considered in both parallel P and antiparallel AP alignments. We show that spin-flip can increase both AP-current and AP-noise, while the P-current and P-noise are almost insensible to it. This fact leads to a suppression of the tunnelling magnetoresistance with increasing spin-flip rate.

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F. M. Souza, J. C. Egues, A. P. Jauho. 2002-09-11. Current and Noise in a FM/quantum dot/FM System. https://arxiv.org/abs/cond-mat/0209263

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