SCATTERING PHASE-SHIFT ANALYSIS OF PERSISTENT CURRENTS IN MESOSCOPIC AHARONOV-BOHM GEOMETRIES

被引：31

作者：

AKKERMANS, E ^{[1
]}

机构：

[1] CNRS,CTR RECH TRES BASSES TEMP,F-38042 GRENOBLE,FRANCE

来源：

EUROPHYSICS LETTERS | 1991年 / 15卷 / 07期

关键词：

S-MATRIX THEORY; FERMION SYSTEMS AND ELECTRON GAS; THEORY OF ELECTRONIC TRANSPORT; SCATTERING MECHANISMS;

D O I：

10.1209/0295-5075/15/7/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ensemble average of the persistent currents of Aharonov-Bohm mesoscopic rings is evaluated in a case where the number of electrons rather than the chemical potential is fixed. The difference between the average currents in these two situations is expressed on general grounds in terms of the fluctuation of the scattering phase shift. It is then shown that in the diffusive regime this difference is (h/2e)-periodic and does not depend on the disorder. Possible extensions of the approach used here are emphasized.

引用

页码：709 / 714

页数：6

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