Interaction-Induced Quantum Dephasing in Mesoscopic Rings

Details Interaction-Induced Quantum Dephasing in Mesoscopic Rings Interaction-Induced Quantum Dephasing in Mesoscopic Rings

2002-05-27

arxiv.org/abs/cond-mat/0205549v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 revtex pages, 2 figures

Scientific paper

10.1209/epl/i2003-00537-2

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 $L_{\phi}$ 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 $L_{\phi}$ derived from weak-localization-type of analysis.

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