On some generalizations of the coherent potential approximation in the disordered alloy problem
- 1 May 1972
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 2 (3) , 468-486
- https://doi.org/10.1088/0305-4608/2/3/016
Abstract
Some generalizations of the coherent potential approximation taking into account cluster effects are presented and discussed. Several different approximations giving the same exact terms in various limiting cases are shown to coexist. In particular the propagator and locator formalisms are proved to yield different results when going beyond the single site approximation.Keywords
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