The Amplitude of Non-Equilibrium Quantum Interference in Metallic Mesoscopic Systems
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.
Keywords
Cite
@article{arxiv.cond-mat/0103486,
title = {The Amplitude of Non-Equilibrium Quantum Interference in Metallic Mesoscopic Systems},
author = {C. Terrier and D. Babic and C. Strunk and T. Nussbaumer and C. Schoenenberger},
journal= {arXiv preprint arXiv:cond-mat/0103486},
year = {2009}
}
Comments
New title, refined analysis. 7 pages, 3 figures, to be published in Europhysics Letters