Weak localization in a system with a barrier: Dephasing and weak Coulomb blockade
arXiv:cond-mat/0702207 · doi:10.1088/1367-2630/10/6/063027
Abstract
We non-perturbatively analyze the effect of electron-electron interactions on weak localization (WL) in relatively short metallic conductors with a tunnel barrier. We demonstrate that the main effect of interactions is electron dephasing which persists down to T=0 and yields suppression of WL correction to conductance below its non-interacting value. Our results may account for recent observations of low temperature saturation of the electron decoherence time in quantum dots.
published version, 10 pages