INTERACTING ELECTRONS IN MESOSCOPIC RINGS

被引：96

作者：

MULLERGROELING, A ^{[1
]}

WEIDENMULLER, HA ^{[1
]}

LEWENKOPF, CH ^{[1
]}

机构：

[1] NATL SUPERCONDUCTING CYCLOTRON LAB,E LANSING,MI 48824

来源：

EUROPHYSICS LETTERS | 1993年 / 22卷 / 03期

关键词：

WEAK LOCALIZATION EFFECTS (EG QUANTIZED STATES); FERMION SYSTEMS AND ELECTRON GAS; METALS AND ALLOYS;

D O I：

10.1209/0295-5075/22/3/006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that in one dimension and at zero temperature, the persistent current without impurity scattering is the same without and with Coulomb interaction, and present the generalization of this result to two (or three) dimensions. When impurity scattering is included, the persistent current for electrons with Coulomb interaction is shown to be larger in magnitude than for non-interacting ones. Qualitative estimates show that an increase by a few orders of magnitude is possible. Numerical calculations in one dimension provide evidence for a Coulomb-driven enhancement back close to the ideal-ring value.

引用

页码：193 / 198

页数：6

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