The effect of the Coulomb interaction on the mesoscopic persistent current

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

References in corpus (4)

• Persistent Currents in 1D Disordered Rings of Interacting Electrons
• Suppression of Persistent Currents in 1-D Disordered Rings by Coulomb Interaction
• A Simple Formula for the Persistent Current in Disordered 1D Rings: Parity and Interaction Effects
• Universal persistent currents in mesoscopic metal rings due to long-range Coulomb interactions

Cited by in corpus (5)

• Random Matrix Theories in Quantum Physics: Common Concepts
• Plastic flow of persistent currents in two dimensional strongly interacting systems
• Interaction-Induced Enhancement and Oscillations of the Persistent Current
• Effective-field-theory approach to persistent currents
• Exact and mean-field analysis of the role of Hubbard interactions on flux driven circular current in a quantum ring