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
收藏
页码：137 / 149
页数：13
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