Effect of the parabolic potential on the binding energy of a hydrogenic impurity in a spherical quantum dot

被引：44

作者：

Xiao, ZG ^{[1
]}

Zhu, JQ ^{[1
]}

He, FL ^{[1
]}

机构：

[1] SHANGHAI INST BLDG MAT,TEST CTR,SHANGHAI 200433,PEOPLES R CHINA

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1996年 / 19卷 / 02期

关键词：

D O I：

10.1006/spmi.1996.0017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The binding energy of the ground state of a hydrogenic off-center donor in a spherical quantum dot under a parabolic potential is calculated by a variational method within the effective-mass approximation. The parabolic potential is assumed to be a spherically symmetric potential. The location effects of a hydrogenic donor under a parabolic potential on the binding energy of the ground state are studied. It is found that in the case of an on-center donor, the parabolic potential tends to enhance the strength of the Coulomb interaction and the binding energy of the ground state, and in the case of an off-center donor, the effect of the parabolic potential on the binding energy of the ground state is somewhat complicated. (C) 1996 Academic Press Limited

引用

页码：137 / 149

页数：13

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