Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
Mesoscale and Nanoscale Physics
2009-11-11 v3
Abstract
We investigate the temperature and voltage dependence of the quantum interference in an electronic Mach-Zehnder interferometer using edge channels in the integer quantum-Hall-regime. The amplitude of the interference fringes is significantly smaller than expected from theory; nevertheless the functional dependence of the visibility on temperature and bias voltage agrees very well with theoretical predictions. Superimposed on the Aharonov-Bohm (AB) oscillations, a conductance oscillation with six times smaller period is observed. The latter depends only on gate voltage and not on the AB-phase, and may be related to single electron charging.
Cite
@article{arxiv.cond-mat/0607758,
title = {Decoherence and single electron charging in an electronic Mach-Zehnder interferometer},
author = {L. V. Litvin and H. -P. Tranitz and W. Wegscheider and C. Strunk},
journal= {arXiv preprint arXiv:cond-mat/0607758},
year = {2009}
}
Comments
4 pages, 6 figures, discussion of charging effect changed