Binding energy of an off - Centre D < sup > 0 < /sup > complex in a GaAs quantum dot with Gaussian confinement

Abstract

The binding energy of an off-centre neutral hydrogenic donor (D 0) trapped in a three-dimensional quantum dot with Gaussian confinement is obtained by a variational method with a very simple wave function. The results are obtained as a function of the quantum dot size and the confinement strength and compared with those available in the literature. The binding energy is dependent on the dot size R, the impurity ion distance D and the confining potential depth V0. © 2013 AIP Publishing LLC.