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Single-particle Hamiltonian and self-consistency in random binary alloys
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TLDR
In this paper, a self-consistent solution for the single-particle Green's function in random binary alloys within the coherent potential approximation is considered, which leads to a first-principles approximate definition of the matrix elements of the singleparticle Hamiltonian even in the tight-binding case, obtaining a physical ground for such an approach.Abstract:
The possibility of obtaining a self-consistent solution for the single-particle Green's function in random binary alloys within the coherent potential approximation is considered. It is shown that the present approach leads to a first-principles approximate definition of the matrix elements of the single-particle Hamiltonian even in the tight-binding case, obtaining a physical ground for such an approach.read more
Citations
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Specific heat enhancement and electron-phonon interaction in random binary alloys
TL;DR: In this paper, a simple model for treating the electron-phonon interaction in the low-temperature region in random binary alloys is developed within the coherent potential approximation.
Journal ArticleDOI
Perspectives in magnetics: Italy
TL;DR: A review of fundamental research in magnetics pursued in Italian universities and laboratories of the Consiglio Nazionale delle Ricerche can be found in this article, where the main topics covered are in the field of soft materials, hard materials and garnets.
Journal ArticleDOI
High-concentration extension of the Friedel sum rule and application to the coherent potential approximation
TL;DR: In this article, the classical Friedel sum rule has been extended to the high-concentration region and the self-consistency condition so obtained has been applied to the coherent potential approximation.
References
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Journal ArticleDOI
Self-Consistent Equations Including Exchange and Correlation Effects
Walter Kohn,L. J. Sham +1 more
TL;DR: In this paper, the Hartree and Hartree-Fock equations are applied to a uniform electron gas, where the exchange and correlation portions of the chemical potential of the gas are used as additional effective potentials.
Journal ArticleDOI
Inhomogeneous Electron Gas
P. C. Hohenberg,Walter Kohn +1 more
TL;DR: In this article, the ground state of an interacting electron gas in an external potential was investigated and it was proved that there exists a universal functional of the density, called F[n(mathrm{r})], independent of the potential of the electron gas.
Journal ArticleDOI
Electron correlations in narrow energy bands
TL;DR: In this paper, the Hartree-Fock approximation of the correlation problem for the d-and f-bands was applied to a simple, approximate model for the interaction of electrons in narrow energy bands.
Journal ArticleDOI
New method for calculating the one-particle green's function with application to the electron-gas problem
TL;DR: In this paper, a set of self-consistent equations for the one-electron Green's function have been derived, which correspond to an expansion in a screened potential rather than the bare Coulomb potential.
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