The optical constants of disordered binary alloys AₓB_1-x have been computed in the coherent-potential approximation for all frequencies, all x, and all reasonable scattering strengths, using a simple one-band model. Our results are compared with the classical Drude formula, and deviations are found stemming from critical points and the effects of alloying. In addition, the high-frequency behavior is shown to be dependent on the concentration x and scattering strength in the alloy.
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Velický et al. (1970) studied this question.
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