Oscillatory persistent currents in self-assembled quantum rings

被引：183

作者：

Kleemans, N. A. J. M. ^{[1
]}

Bominaar-Silkens, I. M. A.

Fomin, V. M.

Gladilin, V. N.

Granados, D.

Taboada, A. G.

Garcia, J. M.

Offermans, P.

Zeitler, U.

Christianen, P. C. M.

Maan, J. C.

Devreese, J. T.

Koenraad, P. M.

机构：

[1] Eindhoven Univ Technol, COBRA, PSN, NL-5600 MB Eindhoven, Netherlands

[2] Univ Nijmegen St Radboud Hosp, IMM, HFML, Nijmegen, Netherlands

[3] Univ Antwerp, TFVS, Antwerp, Belgium

[4] Univ Moldova, FSM, Kishinev, Moldova

[5] CSIC, Inst Microelect Madrid, Madrid, Spain

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.99.146808

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the direct measurement of the persistent current carried by a single electron by means of magnetization experiments on self-assembled InAs/GaAs quantum rings. We measured the first Aharonov-Bohm oscillation at a field of 14 T, in perfect agreement with our model based on the structural properties determined by cross-sectional scanning tunneling microscopy measurements. The observed oscillation magnitude of the magnetic moment per electron is remarkably large for the topology of our nanostructures, which are singly connected and exhibit a pronounced shape asymmetry.

引用

页数：4

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