CONVERGENCE OF THE AUGMENTED-SPACE RECURSION

In this communication we study the convergence of the augmented-space recursion and illustrate the errors produced because of using only a f inite part of the full augmented space and termination of the recursio n after a finite number of steps. We illustrate this by using a TB-LMT O-based augmented-space formalism for a 50-50 AgPd alloy and studying how the moments of the density of states, the Fermi energy and the ban d energy converge.