Charge fluctuation induced dephasing in a gated mesoscopic interferometer
Mesoscale and Nanoscale Physics
2016-08-31 v1
Abstract
The reduction of the amplitude of Aharonov-Bohm oscillations in a ballistic one-channel mesoscopic interferometer due to charge fluctuations is investigated. In the arrangement considered the interferometer has four terminals and is coupled to macroscopic metallic side-gates. The Aharonov-Bohm oscillation amplitude is calculated as a function of temperature and the strength of coupling between the ring and the side-gates. The resulting dephasing rate is linear in temperature in agreement with recent experiments. Our derivation emphasizes the relationship between dephasing, ac-transport and charge fluctuations.
Keywords
Cite
@article{arxiv.cond-mat/0106100,
title = {Charge fluctuation induced dephasing in a gated mesoscopic interferometer},
author = {Georg Seelig and Markus Buttiker},
journal= {arXiv preprint arXiv:cond-mat/0106100},
year = {2016}
}
Comments
13 pages, 5 figures