The effect of the Coulomb interaction on the mesoscopic persistent current
نویسندگان
چکیده
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 × 6 × 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.
منابع مشابه
ar X iv : c on d - m at / 9 40 90 38 v 1 9 S ep 1 99 4 Enhancement of Persistent Currents by the Coulomb Interaction
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 Hartree-Fock approximation is adopted for the interaction between electrons, and models with up to 3 × 4 × 40 sites are investigated. It is shown that the long-range Coulomb interaction enhances the persistent c...
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