Abstract

The application of average t-matrix (ATA) and coherent potential (CPA) approximations to the calculation of average electron momentum density ρ(p) in random muffin-tin alloys AₓB₁₋ₓ is considered. The necessary equations for the general matrix elements of the operators describing scattering by the CPA atom and also by an A or B atom embedded in the effective medium are derived. Various versions of the ATA for ρ(p) are discussed. Several ρ(p) curves calculated on the basis of the CPA and ATA in CuₓNi₁₋ₓ are presented. These results are used to delineate the effects on ρ(p) of self-consistency in the treatment of disorder.

Notes

Originally published in Physical Review B v.23 (1981): 3608-3616. DOI: 10.1103/PhysRevB.23.3608

Keywords

muffin-tin alloys, electron momentum density

Subject Categories

Alloys, T-matrix

Disciplines

Physics

Publisher

American Physical Society

Publication Date

4-15-1981

Rights Information

Copyright 1981 American Physical Society.

Rights Holder

American Physical Society

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