Use of the recursion method in the study of disordered systems

Abstract
Applied to the determination of the density of states of disordered systems, the recursion method permits the local Green's function to be written as a continued fraction. We examine the effect that truncating this fraction has upon the local Green's function and present a means of reducing this effect. Further, a self-consistent approach for obtaining the local Green's function is developed. This approach is shown to be suitable for the study of disordered systems.