Scaling and Decoherence in the Out-of-Equilibrium Kondo Model
Strongly Correlated Electrons
2010-03-22 v2 Mesoscale and Nanoscale Physics
Abstract
We study the Kondo effect in quantum dots in an out-of-equilibrium state due to an applied dc-voltage bias. Using the method of infinitesimal unitary transformations (flow equations), we develop a perturbative scaling picture that naturally contains both equilibrium coherent and non-equilibrium decoherence effects. This framework allows one to study the competition between Kondo effect and current-induced decoherence, and it establishes a large regime dominated by single-channel Kondo physics for asymmetrically coupled quantum dots.
Keywords
Cite
@article{arxiv.cond-mat/0410341,
title = {Scaling and Decoherence in the Out-of-Equilibrium Kondo Model},
author = {Stefan Kehrein},
journal= {arXiv preprint arXiv:cond-mat/0410341},
year = {2010}
}
Comments
4 pages, 3 figures; v2: minor changes (typos corrected, esp. in Eqs. (3), (4), references updated, improved layout for figures)