SHALLOW DONOR IMPURITY IN A QUANTUM BOX - EFFECTS OF IMAGE POTENTIAL

Considering the image potential, we calculate the binding energies of a shallow donor impurity placed on the centre of a quantum box using t he variational approach. The results we have obtained show that there is a great difference of the effects of image potential between the ca ses including impurity ion image potential and including the image pot entials of impurity ion and electron simultaneously. The results also show that the image potential is important, especially when the dimens ions of quantum box become small.