Investigation of the mesoscopic Aharonov-Bohm effect in low magnetic fields

被引：9

作者：

Hansen, AE ^{[1
]}

Pedersen, S ^{[1
]}

Kristensen, A ^{[1
]}

Sorensen, CB ^{[1
]}

Lindelof, PE ^{[1
]}

机构：

[1] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

来源：

PHYSICA E | 2000年 / 7卷 / 3-4期

关键词：

semiconductors; Aharonov-Bohm; low magnetic fields;

D O I：

10.1016/S1386-9477(00)00056-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have investigated the Aharonov-Bohm effect in mesoscopic semiconductor GaAs/GaAlAs rings in low magnetic fields. The oscillatory magnetoconductance of these systems is systematically studied as a function of electron density. We observe phase shifts of pi in the magnetoconductance oscillations, and halving of the fundamental h/e period, as the density is varied. Theoretically, we find agreement with the experiment, by introducing an asymmetry between the two arms of the ring. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：776 / 780

页数：5

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