The binding energy of a hydrogenic impurity in self-assembled double quantum dots

被引：0

作者：

张红 ^{[1
]}

王学 ^{[1
]}

赵剑锋 ^{[1
]}

刘建军 ^{[2
]}

机构：

[1] College of Science,Hebei University of Engineering

[2] College of Physical Science and Information Engineering,Hebei Normal University

来源：

Chinese Physics B | 2011年 / 20卷 / 12期

基金：

中国国家自然科学基金;

关键词：

hydrogenic impurity; double quantum dots; binding energy; magnetic field;

D O I：

暂无

中图分类号：

O471.1 [半导体量子理论];

学科分类号：

070205 ; 080501 ; 0809 ; 080903 ;

摘要：

The binding energy of a hydrogenic impurity in self-assembled double quantum dots is calculated via the finite-difference method.The variation in binding energy with donor position,structure parameters and external magnetic field is studied in detail.The results found are:(i) the binding energy has a complex behaviour due to coupling between the two dots;(ii) the binding energy is much larger when the donor is placed in the centre of one dot than in other positions;and (iii) the external magnetic field has different effects on the binding energy for different quantum-dot sizes or lateral confinements.

引用

页码：377 / 381

页数：5

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