Donor Centers in a Gaussian Potential  

作　　者：XIE Wen-Fang 

机构地区：[1]Department of Physics, Guangzhou University, Guangzhou 510006, China

出　　处：《Communications in Theoretical Physics》2007年第1期167-170,共4页理论物理通讯（英文版）

基　　金：The project supported by National Natural Science Foundation of China under Grant No. 10475014 and the Natural Science Foundation of Guangdong Province under Grant No. 04009519

摘　　要：We study a neutral donor center （D^0） and a negatively charged donor center （D^-） trapped by a quantum dot, which is subjected to a Gaussian potential confinement. Calculations are made by using the method of numerical diagonalization of Hamiltonian within the effective-mass approximation. The dependence of the ground state of the neutral shallow donor and the negatively charged donor on the dot size and the potential depth is investigated. The same calculations performed with the parabolic approximation of the Gaussian potential lead to the results that are qualitatively and quantitatively different from each other.

关 键 词：DONOR quantum dots 

分 类 号：O413[理学—理论物理]