Binding Energy of   an Off-Center D- in a Spherical Quantum Dot

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Communications in Theoretical Physics ›› 2009, Vol. 51 ›› Issue (05) : 919-922.

Binding Energy of an Off-Center D- in a Spherical Quantum Dot

LIU Dong-Ming and XIE Wen-Fang

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Abstract

Using the method of matrix diagonalization, we investigate an off-center D^- in a spherical quantum dot (QD) subjected to a parabolic potential confinement. We discuss the effect of the position of an impurity in the QD on the binding
energy of the D^- system. Furthermore, we compare a negatively charged donor D^- with a neutral donor D⁰ confined by a spherical QD with a parabolic potential. The results have clearly demonstrate the so-called quantum size effect. The binding
energy is dependent on the confining potential \hbar ω₀ and the impurity ion distance D.

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quantum dots / donor

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LIU Dong-Ming and XIE Wen-Fang. Binding Energy of an Off-Center D- in a Spherical Quantum Dot[J]. Communications in Theoretical Physics, 2009, 51(05): 919-922