Effect of connecting wires on the decoherence due to electron-electron interaction in a metallic ring
Abstract
Description
We consider the weak localization in a ring connected to reservoirs through leads of finite length and submitted to a magnetic field. The effect of decoherence due to electron-electron interaction on the harmonics of AAS oscillations is studied, and more specifically the effect of the leads. Two results are obtained for short and long leads regimes. The scale at which the crossover occurs is discussed. The long leads regime is shown to be more realistic experimentally.
LaTeX, 4 pages, 4 eps figures
LaTeX, 4 pages, 4 eps figures