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

D. S. Golubev·A. D. Zaikin
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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.

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D. S. Golubev, A. D. Zaikin. 2008-07-01. Weak localization in a system with a barrier: Dephasing and weak Coulomb blockade. https://doi.org/10.1088/1367-2630%2F10%2F6%2F063027

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