The main part of this book is devoted to the simplest kind of Green's functions, namely the
solutions of linear differential equations with a-function source. It is shown that these familiar …

For pt. I see abstr. A80956 of 1972. A number of methods previously used for calculating the
local electronic structure for tight-binding bands were based on the local atomic environment …

Publisher Summary This chapter discusses the catalysis by alloys in hydrocarbon reactions.
With solution alloys the effect of alloying on the electronic structure is surprisingly small, and …

It is shown that the terms in the cumulant expansion of the coherent potential for an
uncorrelated substitutional alloy can be combined by partial summation in such a way that …

Different kinds of mean-field theories (MFT) of spin glasses (SG) are reviewed. A brief
introductory review of major experimental results, which have to be explained theoretically …

A method is presented for the exact determination of the Green's function of a cluster
embedded in a given effective medium. This method, the multishell method, is applicable …

Publisher Summary The chapter presents a study on the applications of the recursion
method to the electronic structure from the atomic perspective. The recursion method is an …

We report calculations of densities of states (DOS) associated with specific atomic
configurations of compact clusters in substitutionally disordered alloys describable by a …

Randomness is introduced in the off-diagonal elements of a tight-binding Hamiltonian. The
question of localization is examined in this model Hamiltonian using two different methods …

Progress has recently been made within the effective medium approach to describing
substitutionally disordered systems through the development of the nonlocal coherent …