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

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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.
To appear in Proceedings of ICPS 26

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/19935

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0209263
 http://arxiv.org/abs/cond-mat/0209263

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arXiv