Aharonov-Bohm oscillations in a mesoscopic ring with a quantum dot
Condensed Matter
2009-10-28 v1
Abstract
We present an analysis of the Aharonov-Bohm oscillations for a mesoscopic ring with a quantum dot inserted in one of its arms. It is shown that microreversibility demands that the phase of the Aharonov-Bohm oscillations changes {\it abruptly} when a resonant level crosses the Fermi energy. We use the Friedel sum rule to discuss the conservation of the parity of the oscillations at different conductance peaks. Our predictions are illustrated with the help of a simple one channel model that permits the variation of the potential landscape along the ring.
Keywords
Cite
@article{arxiv.cond-mat/9507074,
title = {Aharonov-Bohm oscillations in a mesoscopic ring with a quantum dot},
author = {A. Levy Yeyati and M. Buttiker},
journal= {arXiv preprint arXiv:cond-mat/9507074},
year = {2009}
}
Comments
11 pages, Revtex style, 3 figures under request. Submitted to Phys. Rev. B (rapid communications)