Diamagnetic response of Aharonov-Bohm rings: Impurity backward scatterings
Mesoscale and Nanoscale Physics
2009-11-10 v2
Abstract
We report a theoretical calculation on the persistent currents of disordered normal-metal rings. It is shown that the diamagnetic responses of the rings in the vicinity of the zero magnetic field are attributed to multiple backward scatterings off the impurities. We observe the transition from the paramagnetic response to the diamagnetic one as the strength of disorder grows using both the analytic calculation and the numerical exact diagonalization.
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Cite
@article{arxiv.cond-mat/0412189,
title = {Diamagnetic response of Aharonov-Bohm rings: Impurity backward scatterings},
author = {Mun Dae Kim and Chul Koo Kim and Kyun Nahm},
journal= {arXiv preprint arXiv:cond-mat/0412189},
year = {2009}
}
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final version