J. Banhart et al., APPROXIMATIONS MADE IN EVALUATING THE RESIDUAL ELECTRICAL DC RESISTIVITY OF DISORDERED ALLOYS, Physical review. B, Condensed matter, 50(4), 1994, pp. 2104-2109
The residual electrical dc resistivity of the transition-metal-alloy s
ystem Cu-Pt is evaluated by making use of the relativistic version of
the Korringa-Kohn-Rostoker-coherent potential approximation and the on
e-electron Kubo-Greenwood formula for disordered systems. Starting fro
m the results of a previous calculation the influence of truncation of
the angular momentum expansion, the effects of self-consistency of th
e alloy potential, the importance of vertex corrections, and the diffe
rence between the nonrelativistic and the relativistic current operato
r are examined.