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Nonequilibrium Transport through a Kondo Dot: Decoherence Effects | | J. Paaske
; A. Rosch
; J. Kroha
; P. Wölfle
; | | Date: |
12 Dec 2003 | | Subject: | Strongly Correlated Electrons; Mesoscopic Systems and Quantum Hall Effect | cond-mat.str-el cond-mat.mes-hall | | Abstract: | 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. | | Source: | arXiv, cond-mat/0401180 | | Services: | Forum | Review | PDF | Favorites | |
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