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 paper, a photoelectron study of a series of Ag-Pd alloys has been made using photon energies of 40.81 eV and 21.22 eV. The results have been compared in detail with the predictions of a theoretical coherent potential approximation model for the valence-band densities of states for these alloys and good overall agreement noted.
Abstract: A photoelectron study of a series of Ag-Pd alloys has been made using photon energies of 40.81 eV and 21.22 eV. The results have been compared in detail with the predictions of a theoretical coherent potential approximation model for the valence-band densities of states for these alloys and good overall agreement noted.
31 citations
TL;DR: In this paper, the coherent potential approximation (CPA) is applied to spin-disorder scattering in systems described by the s-d model such as moderately doped magnetic semiconductors.
31 citations
TL;DR: In this article, the electronic structure of a Cu/sub 09/Al/sub 01/ (100) single crystal has been studied with use of an angle-resolved photoemission technique.
Abstract: The electronic structure of a Cu/sub 09/Al/sub 01/ (100) single crystal has been studied with use of an angle-resolved photoemission technique An intrinsic Tamm-type surface state is found to exist in the disordered alloy The linewidth of the surface state is analyzed to deduce the disorder-induced smearing of energy levels These and other experimental results are discussed in terms of the computed band structure of the alloy on the basis of coherent potential approximation applied to a realistic muffin-tin Hamiltonain
31 citations
TL;DR: In this paper, the Yonezawa method was extended to the case of liquid metals by applying the selfcontained treatment of multiple occupancy corrections in determining the selfconsistent equations for the average Green function and the self energy.
Abstract: It is pointed out that, when the coherent potential approximation is extended to the case of liquid metals by applying the Yonezawa method (1964) for the selfcontained treatment of multiple occupancy corrections in determining the selfconsistent equations for the average Green function and the self energy, the results reduce to the effective medium theory proposed by Roth (1972-4). The approximations involved in this and several previous theories are clarified by means of diagrams in the tight binding representation.
31 citations
Book•
01 Dec 1987
TL;DR: In this article, a model describing lattice dynamics of structurally unstable crystals (self consistent phonon approximation, pseudo-spin formalism, coherent potential approximation etc.) is formulated and the effects of nonlinear excitations and lattice defects in neutron scattering are also discussed.
Abstract: This book presents the recent theoretical and experimental developments of neutron scattering by ferroelectrics. A model description of lattice dynamics of structurally unstable crystals (self consistent phonon approximation, pseudo-spin formalism, coherent potential approximation etc.) is formulated. The effects of nonlinear excitations and lattice defects in neutron scattering are also discussed.
30 citations