Nonequilibrium Transport through a Kondo Dot: Decoherence Effects

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We investigate the effects of voltage induced spin-relaxation in a quantum dot in the Kondo regime. Using nonequilibrium perturbation theory, we determine the joint effect of self-energy and vertex corrections to the conduction electron T-matrix in the limit of transport voltage much larger than temperature. The logarithmic divergences, developing near the different chemical potentials of the leads, are found to be cut off by spin-relaxation rates, implying that the nonequilibrium Kondo-problem remains at weak coupling as long as voltage is much larger than the Kondo temperature.
16 pages, 4 figures

Keywords

Strongly Correlated Electrons, Mesoscale and Nanoscale Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/98583

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0401180
 http://arxiv.org/abs/cond-mat/0401180
 Phys. Rev. B 70, 155301 (2004)
 doi:10.1103/PhysRevB.70.155301

Collections

arXiv