CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES

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

2009 Chinese Physical Society and IOP Publishing Ltd
, , Citation Xie Wen-Fang 2009 Commun. Theor. Phys. 51 748 DOI 10.1088/0253-6102/51/4/30

0253-6102/51/4/748

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.

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10.1088/0253-6102/51/4/30