Absence of localization in a disordered one-dimensional ring threaded by an Aharonov-Bohm flux
Disordered Systems and Neural Networks
2015-05-13 v1 Mesoscale and Nanoscale Physics
Abstract
Absence of localization is demonstrated analytically to leading order in weak disorder in a one-dimensional Anderson model of a ring threaded by an Aharonov-Bohm (A-B) flux. The result follows from adapting an earlier perturbation treatment of disorder in a superconducting ring subjected to an imaginary vector potential proportional to a depinning field for flux lines bound to random columnar defects parallel to the axis of the ring. The absence of localization in the ring threaded by an A-B flux for sufficiently weak disorder is compatible with large free electron type persistent current obtained in recent studies of the above model.
Keywords
Cite
@article{arxiv.0907.0639,
title = {Absence of localization in a disordered one-dimensional ring threaded by an Aharonov-Bohm flux},
author = {J. Heinrichs},
journal= {arXiv preprint arXiv:0907.0639},
year = {2015}
}