Persistent Currents for Interacting Electrons: a Simple Hartree-Fock Picture
Condensed Matter
2009-10-28 v1
Abstract
The average persistent current <I> of diffusive electrons in the Hartree-Fock approximation is derived in a simple non-diagrammatic picture. The Fourier expansion directly reflects the winding number decomposition of the diffusive motion around the ring. One recovers the results of Ambegaokar and Eckern, and Schmid. Moreover one finds an expression for <I> which is valid beyond the diffusive regime.
Cite
@article{arxiv.cond-mat/9506053,
title = {Persistent Currents for Interacting Electrons: a Simple Hartree-Fock Picture},
author = {Gilles Montambaux},
journal= {arXiv preprint arXiv:cond-mat/9506053},
year = {2009}
}
Comments
7 pages, latex, no figures