Magneto-polarisability of mesoscopic rings

被引：20

作者：

Noat, Y

Reulet, B

Bouchiat, H

机构：

[1] Laboratoire de Physique des Solides, Associé au CNRS, Université Paris-Sud, 91405, Orsay

来源：

EUROPHYSICS LETTERS | 1996年 / 36卷 / 09期

关键词：

D O I：

10.1209/epl/i1996-00290-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the average polarisability of two-dimensional mesoscopic rings in the presence of an Aharonov-Bohm flux. The screening is taken into account self-consistently within a mean-field approximation. We investigate the effects of statistical ensemble, finite frequency and disorder. We emphasize geometrical effects which make the observation of field-dependent polarisability much more favourable on rings than on disks or spheres of comparable radius. The ratio of the flux-dependent to the flux-independent part is estimated for typical GaAs rings.

引用

页码：701 / 706

页数：6

共 25 条

[1]

AKKERMANS E, 1995, HOUCHES 1994 MESOSCO

[2] FLUCTUATIONS IN THE ELECTRICAL POLARIZABILITY OF A THIN MESOSCOPIC FILM [J].