Weak localization in a system with a barrier: Dephasing and weak Coulomb blockade

Details Weak localization in a system with a barrier: Dephasing and weak Coulomb blockade Weak localization in a system with a barrier: Dephasing and weak Coulomb blockade

2007-02-08

arxiv.org/abs/cond-mat/0702207v2

New J. Phys. 10, 063027 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

published version, 10 pages

Scientific paper

10.1088/1367-2630/10/6/063027

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.

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