A simple model is applied to calculate electron-lifetime effects on the density of states, Fermi velocity, and Drude plasma energy in ${\mathrm{Nb}}_3$Sn, ${\mathrm{Nb}}_3$Ge, and Ti-V-Cr alloys. Formulas are provided for utilizing these results to estimate a number of superconducting and normal-state properties of these materials.

• Received 16 April 1979

DOI:https://doi.org/10.1103/PhysRevB.20.2196