Berry phase and persistent current in disordered mesoscopic rings
Mesoscale and Nanoscale Physics
2009-10-31 v1 Disordered Systems and Neural Networks
Quantum Physics
Abstract
A novel quantum interference effect in disordered quasi-one-dimensional rings in the inhomogeneous magnetic field is reported. We calculate the canonical disorder averaged persistent current using the diagrammatic perturbation theory. It is shown that within the adiabatic regime the average current oscillates as a function of the geometric flux which is related to the Berry phase and the period becomes half the value of the case of a single one-dimensional ring. We also discuss the magnetic dephasing effect on the averaged current.
Keywords
Cite
@article{arxiv.cond-mat/9908440,
title = {Berry phase and persistent current in disordered mesoscopic rings},
author = {Shiro Kawabata},
journal= {arXiv preprint arXiv:cond-mat/9908440},
year = {2009}
}
Comments
6 pages, RevTeX, 2 figures. To appear in Phys. Rev. B Rapid Communications Vol.60 No.12 (1999)