期刊
SUPERLATTICES AND MICROSTRUCTURES
卷 104, 期 -, 页码 37-45出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2017.02.006
关键词
Low-dimensional nano-structures; Hydrogenic impurity; External electric field; Variational method; Plane wave basis method
资金
- National Natural Science Foundation of China [61674096]
- Shandong Province Natural Science Foundation [ZR2014FM011]
- State Key Laboratory of Functional Materials for Informatics [SKL201307]
A comparison is made between the plane wave basis and variational method. Within the framework of effective-mass approximation theory, the variational and plane wave basis method are used to calculate ground state energy and ground state binding energy in low dimensional nano-structures under the external electric field. Comparing calculation results, the donor binding energies of ground state display the consistent trend, both of them are strongly dependent on the quantum size, impurity position and external electric field. However, the impurity ground state energy calculated using variational method may be larger than the real value and it results in the smaller binding energy for variational method. In addition, the binding energy is more sensitive to the external electric field for the variational method, which can be seen more clearly from Stark shift. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据