Topic
Coherent potential approximation
About: Coherent potential approximation is a research topic. Over the lifetime, 1930 publications have been published within this topic receiving 36805 citations.
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TL;DR: In this article, a generalised coherent potential approximation is used to describe a chemically disordered material and the method gives not only the density of states for such a system but also reliable values of the total energy.
Abstract: A generalised coherent potential approximation is used to describe a chemically disordered material. It is shown that the method gives not only the density of states for such a system but also reliable values of the total electronic energy. The model is applied to a binary metal alloy where it is seen that a pseudo gap develops prior to the development of an ordered phase and in both cases the conductivity is anticipated to be lowered.
6 citations
TL;DR: In this paper, the single-site coherent potential approximation (SS-CPA) was extended to the case of off-diagonal randomness and the density of states for a bcc lattice was calculated in the split band limit.
Abstract: The single-site coherent potential approximation (SS-CPA) for a disordered binary alloy is extended in a self-consistent manner to the case of off-diagonal randomness. The density of states for a bcc lattice is calculated in the split band limit for no correlation between diagonal and off-diagonal randomness and compared with the ordered and SS-CPA density of states.
6 citations
TL;DR: In this paper, a method of calculating the total energy for disordered alloys is presented and a formula for the potential in the self-consistent Korringa-Kohn-Rostoker coherentpotential approximation is also given by using the muffin-tin approximation after the variation of the overall energy is made.
Abstract: A method of calculating the total energy for disordered alloys is presented. A formula for the potential in the self-consistent Korringa-Kohn-Rostoker coherent-potential approximation is also given by using the muffin-tin approximation after the variation of the total energy is made. This method was applied to Cu-Pd alloys. The numerical results indicate that the disordered state is stable over the whole concentration range of Pd. This agrees with experiments.
6 citations
TL;DR: In this article, the dynamics of an exciton strongly interacting with phonons are studied by calculating the optical absorption and the secondary-emission spectra in a new effective medium approximation which is an extension of the dynamical coherent potential approximation.
6 citations
TL;DR: In this paper, the authors used the coherent potential approximation in the vicinity of the atomic limit to calculate the density-of-states of an ionic crystal and a molten salt.
6 citations