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Interaction-Induced Quantum Dephasing in Mesoscopic Rings

Dmitri S. Golubev·Carlos P. Herrero·Andrei D. Zaikin
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Abstract

Combining nonperturbative techniques with Monte Carlo simulations we demonstrate that quantum coherence effects for a particle on a ring are suppressed beyond a finite length $L_ϕ$ even at zero temperature if the particle is coupled to a diffusive electron gas by means of long range Coulomb interaction. This length is consistent with $L_ϕ$ derived from weak-localization-type of analysis.

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Dmitri S. Golubev, Carlos P. Herrero, Andrei D. Zaikin. 2002-05-27. Interaction-Induced Quantum Dephasing in Mesoscopic Rings. https://doi.org/10.1209/epl%2Fi2003-00537-2

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