Disordered alloys with a Bethe lattice structure: a study of a new mean-field approximation

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, , Citation G Gomez-Santos and J A Verges 1987 J. Phys. C: Solid State Phys. 20 5501 DOI 10.1088/0022-3719/20/33/008

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1 Dept. de Fisica de la Mater. Condensada, Univ. Autonoma de Madrid, Spain

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0022-3719/20/33/5501

Abstract

The authors study a new mean-field method to calculate the densities of states in random alloys with a Bethe lattice structure. The formalism includes both diagonal and off-diagonal disorder as well as short-range order. Results in one-dimension are compared with exact spectra. The method is compared with other mean-field approximations. This approach is shown to exhibit the correct behaviour around certain limits.

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