The effect of the Coulomb interaction on the mesoscopic persistent current
arXiv:cond-mat/9501105 · doi:10.1016/0921-4526(95)00039-C
Abstract
The persistent current in three-dimensional mesoscopic rings is investigated numerically. The model is tight-binding one with random site-energies and interaction between electrons. The self-consistent Hartree-Fock approximation is adopted for the interaction between electrons, and models with up to $6\times 6\times 20$ sites are investigated. It is shown that the long-range Coulomb interaction enhances the persistent current for rings with finite width. The origin of the enhancement is discussed.
10 pages, Revtex, figures upon request paper given at Workshop on Novel Physics in Low-Dimensional Electron Systems, January 9-14, 1995, at Madras