Calculation of the Electronic Density of States and the Electric Conductivity of Random Alloys in the Coherent Potential Approximation

Numerical calculations of the electronic density of states and the electric conductivity at zero temperature are reported within the coherent potential approximation for random binary alloys on the bcc lattice. The computations are made with the aid of an efficient procedure of evaluating the lattice Green function. A poor-conductive region is observed around the dip of the electronic density of states, just before the dip develops to a gap, for binary alloys with small minority densities