Binding Energies of Negatively Charged Donors in a Gaussian Potential Quantum Dot
XIE Wen-Fang
Department of Physics, Guangzhou University, Guangzhou 510405
Binding Energies of Negatively Charged Donors in a Gaussian Potential Quantum Dot
XIE Wen-Fang
Department of Physics, Guangzhou University, Guangzhou 510405
关键词 ：
73.21.-b ,
78.67.-n
Abstract ： We investigate a negatively charged donor centre (D- ) trapped by a quantum dot, which is subjected to a Gaussian potential confinement. Calculations are carried out by using the method of numerical diagonalization of Hamiltonian within the effective-mass approximation. The dependence of the ground state of the negatively charged donor on the dot size and the potential depth is studied. The same calculations performed with the parabolic approximation of the Gaussian potential lead to the results that are qualitatively and quantitatively different.
Key words ：
73.21.-b
78.67.-n
出版日期: 2005-07-01
:
73.21.-b
(Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems)
78.67.-n
(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
引用本文:
XIE Wen-Fang. Binding Energies of Negatively Charged Donors in a Gaussian Potential Quantum Dot[J]. 中国物理快报, 2005, 22(7): 1768-1771.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I7/1768
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