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Electronic structure of disordered alloys-local environment effects
Deepak Kumar, S. Joshi K.
Published in
1976
Volume: 9

Issue: 14
Pages: 2733 - 2737
Abstract
The coherent potential approximation has been generalized to incorporate the effects of the local environment in the energy spectrum of disordered alloys described by the simple tight-binding approximation. The effective medium has been characterized by an effective local potential Sigma 1 and an effective hopping integral Sigma 2 between the nearest neighbours though the off-diagonal elements of the alloy Hamiltonian are not assumed to be disordered in the present calculation. The density of states has been calculated for a binary alloy AxB1-x having diamond lattice structure.