Electron momentum densities in disordered muffin-tin alloys
Originally published in Physical Review B v.23 (1981): 3608-3616. DOI: 10.1103/PhysRevB.23.3608
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.
A. Bansil, R. S. Rao, P. E. Mijnarends, and L. Schwartz. "Electron momentum densities in disordered muffin-tin alloys" Physics Faculty Publications (1981).
Available at: http://works.bepress.com/abansil/60