Abstract
The density of states of an electron in a binary alloy in the tight binding model is calculated in the single site coherent potential approximation (CPA) as a function of the concentration and the site energy difference. The fluctuations in the site energies due to the random environment is taken into account approximately by giving width to the site energy probability distribution function, which is normally a sum of two delta functions with proper weight factor.
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Kumar, A.P. Density of states of the binary alloy in the coherent potential approximation. Pramana - J. Phys. 8, 328–334 (1977). https://doi.org/10.1007/BF02847803
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DOI: https://doi.org/10.1007/BF02847803