Electron Raman scattering of a hydrogenic impurity in a disc-shaped quantum dot

被引：7
|
作者：
Liang, Shijun [1 ]
Xie, Wenfang [1 ]
Lu, Liangliang [1 ]
机构：
[1] Guangzhou Univ, Dept Phys, Coll Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Quantum dot; Impurity; Raman scattering; BINDING-ENERGY; DONOR; FIELD;
D O I：
10.1016/j.physb.2010.11.072
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have carried out the theoretical calculation of the differential cross section for the electron Raman scattering process associated with a hydrogenic impurity in a disc-shaped quantum dot (QD). We consider the impurity states confined in a disc-shaped QD with parabolic potential in the presence of an external electric field. Effects of the electric field and the confinement strength on the differential cross section are investigated. We make a comparison about the Raman intensity between with and without the Coulomb interaction. We found that the differential cross section of the hydrogenic impurity in a disc-shaped QD dependent strongly on the confinement strength, the external electric field intensity and the Coulomb interaction. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：652 / 655
页数：4
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