Interacting electrons in disordered potentials: Conductance versus persistent currents

被引：40

作者：

Berkovits, R ^{[1
]}

Avishai, Y ^{[1
]}

机构：

[1] BEN GURION UNIV NEGEV,DEPT PHYS,IL-84105 BEER SHEVA,ISRAEL

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.76.291

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An expression for the conductance of interacting electrons in the diffusive regime as a function of the ensemble averaged persistent current and the compressibility of the system is presented. This expression involves only ground-state properties of the system. The different dependencies of the conductance and persistent current on the electron-electron interaction strength becomes apparent. The conductance and persistent current of a small system of interacting electrons are calculated numerically and their variation with the strength of the interaction is compared. It is found that while the persistent current is enhanced by interactions, the conductance is suppressed.

引用

页码：291 / 294

页数：4

共 37 条

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