Spectrum and Binding Energy of an Off-Center Hydrogenic Donor in a Spherical Quantum Dot  

作　　者：袁建辉 黄锦胜 尹淼 曾奇军 张俊佩 

机构地区：[1]Department of Physics,Huazhong University of Science and Technology [2]Jieyang Vocational and Technical College

出　　处：《Communications in Theoretical Physics》2010年第8期369-372,共4页理论物理通讯（英文版）

摘　　要：Off-center impurity effects in a spherical quantum dot are theoretically studied by degenerate perturbationmethod in strong confinement.The energy levels and binding energies are computed for the typical GaAs material asfunction of the donor position.The numerical results show the quantum size effect.We note that the energy levels andbinding energies are not only related to the position of donor and the strength of confinement,but also related to thefold of degenerate states.We can see obviously that gaps will appear among the degenerate states and the splitting ofenergy levels and binding energies will appear as the position of the impurity is shifted away off the center.

关 键 词：quantum dots impurity levels binding energy 

分 类 号：O413.1[理学—理论物理]