Charged and neutral excitons in natural quantum dots in the InAs/GaAs wetting layer

被引：4

作者：

Babinski, Adam ^{[1
]}

Potemski, M. ^{[1
,2
]}

Raymond, S. ^{[3
]}

Wasilewski, Z. R. ^{[3
]}

机构：

[1] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[2] CNRS, Grenoble High Magnet Field Lab, F-38042 Grenoble 9, France

[3] NRC Canada, Inst Microstruct Sci, Ottawa, ON, Canada

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 06期

关键词：

magnetospectroscopy; quantum dots;

D O I：

10.1016/j.physe.2007.09.110

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnetospectroscopic studies of the InAs/GaAs wetting layer (WL) accompanying self-organized quantum dots (QDs) grown in Stranski-Krastanow mode are presented. Sharp emission lines from "natural" QDs formed in the WL are observed and their evolution in magnetic field is investigated. A quadruplet or a doublet splitting of the emission lines has been observed in magnetic field, which is attributed to a charged and a neutral exciton in a single dot. The metastable transformation of the spectrum from the former to the latter configuration has been observed and explained in terms of the charging of a single dot. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：2078 / 2080

页数：3

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