Binding Energies of D- Centers Trapped by a Quantum Dot in a Magnetic Field

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理论物理通讯 ›› 2009, Vol. 51 ›› Issue (04) : 748-750.

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Binding Energies of D- Centers Trapped by a Quantum Dot in a Magnetic Field

XIE Wen-Fang

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Abstract

A investigation of the properties of the bound states of D^- centers
confined in a parabolic quantum dot has been performed for the case with the
presence of a perpendicular magnetic field. Calculations are carried out by
using the method of numerical diagonalization of Hamiltonian matrix within
the effective-mass approximation. The binding energies of the ground and
some bound-excited states are obtained as a function of the applied magnetic
field strength. Detailed calculations of the binding energies for a number
of low-lying states show that for field strength less than B=2.1 T, the
D^- center confined in a quantum dot possesses two bound states, for
2.1≤ B<2.4 T, there exist three bound states, etc. Further relevant
characteristics of the D^- center quantum dots in magnetic fields are provided.

导出引用

XIE Wen-Fang. Binding Energies of D- Centers Trapped by a Quantum Dot in a Magnetic Field[J]. 理论物理通讯, 2009, 51(04): 748-750

XIE Wen-Fang. Binding Energies of D- Centers Trapped by a Quantum Dot in a Magnetic Field[J]. Communications in Theoretical Physics, 2009, 51(04): 748-750

中图分类号： 73.21.La 73.20.Hb