Abstract
A theory is presented in which bound states arising from a combination of long-range and short-range isoelectronic potentials are shown to account for recent experimental data in Ga(As,P):N. These results alter our physical picture in this system. Numerical calculations agree with experiment. They indicate that the long-range potential may correspond to a deformation potential which arises from a uniform, slowly varying dilation of the lattice constant in the region of the nitrogen atom. Analysis of experimental data suggests an expansion of 0.9% of the lattice constant.