Transport-property test for electron-phonon effects in the density of states for Cu-based alloys

The results of a recent calculation were suggested as indirect documentation for electron-phonon effects in the density of states for Cu-based alloys. Transport properties are used to provide a twofold test for this suggestion. Each aspect of the test raises serious doubts about the validity of the suggestion's basis. The test also leads to the isolation of a single parameter, the energy dependence of the $l=2\mathrm{}$ phase shift, as a critical and highly sensitive element in any indirect documentation. This result is supported by band-structure calculations.