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.
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
Recommended Citation
Bansil, A.; Rao, R. S.; Mijnarends, P. E.; and Schwartz, L., "Electron momentum densities in disordered muffin-tin alloys" (1981). Physics Faculty Publications. Paper 370.
Click button above to open, or right-click to save.
Notes
Originally published in Physical Review B v.23 (1981): 3608-3616. DOI: 10.1103/PhysRevB.23.3608