Berry phase and persistent current in disordered mesoscopic rings
介观与纳米尺度物理
2009-10-31 v1 无序系统与神经网络
量子物理
摘要
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.
引用
@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}
}
备注
6 pages, RevTeX, 2 figures. To appear in Phys. Rev. B Rapid Communications Vol.60 No.12 (1999)