Enhancement of the Coulomb correlations in type-Il quantum dots

被引：21

作者：

Lelong, P

Suzuki, K

Bastard, G

Sakaki, H

Arakawa, Y

机构：

[1] Univ Tokyo, Inst Ind Sci, Minato Ku, Tokyo 106, Japan

[2] ENS, Phys Mat Condensee Lab, F-75005 Paris, France

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2000年 / 7卷 / 3-4期

基金：

日本学术振兴会;

关键词：

GaSb/GaAs type-II quantum dots; electron states; charged excitons; biexcitons;

D O I：

10.1016/S1386-9477(99)00348-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report on calculation of binding energies of excitons as well as positively and negatively charged excitons and biexcitons in type-II quantum dots, The shape of the GaSb/GaAs quantum dot is assumed lens-like and the energies are calculated within the Hartree-Fock approximation, A large enhancement of the binding energies has been estimated in comparison with the type-I quantum dots (InAs/GaAs) which is in good agreement with the recent experimental findings. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：393 / 397

页数：5

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