Systems with static and dynamic disorder: generalised coherent potential approximation

Published under licence by IOP Publishing Ltd
, , Citation A Mookerjee 1990 J. Phys.: Condens. Matter 2 897 DOI 10.1088/0953-8984/2/4/010

0953-8984/2/4/897

Abstract

Using the ideas of the augmented space formalism introduced some time ago by this author, a generalisation of the coherent potential approximation and its cluster extensions is developed for systems that have both inherent static disorder as well as potentials that fluctuate randomly with time. The formalism reduces to standard results in the adiabatic limit.

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10.1088/0953-8984/2/4/010