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The Amplitude of Non-Equilibrium Quantum Interference in Metallic Mesoscopic Systems | | C. Terrier
; D. Babic
; C. Strunk
; T. Nussbaumer
; C. Schoenenberger
; | | Date: |
23 Mar 2001 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Affiliation: | Institute of Physics, University of Basel, Switzerland | | Abstract: | We study the influence of a DC bias voltage V on quantum interference corrections to the measured differential conductance in metallic mesoscopic wires and rings. The amplitude of both universal conductance fluctuations (UCF) and Aharonov-Bohm effect (ABE) is enhanced several times for voltages larger than the Thouless energy. The enhancement persists even in the presence of inelastic electron-electron scattering up to V ~ 1 mV. For larger voltages electron-phonon collisions lead to the amplitude decaying as a power law for the UCF and exponentially for the ABE. We obtain good agreement of the experimental data with a model which takes into account the decrease of the electron phase-coherence length due to electron-electron and electron-phonon scattering. | | Source: | arXiv, cond-mat/0103486 | | Services: | Forum | Review | PDF | Favorites | |
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