Soven's method of doing the coherent-potential approximation for a nonoverlapping-muffin-tin-potential model of random substitutional alloys has been rederived without the use of an energy-dependent model potential. As a consequence of the present approach, a much simplified expression for the density of states is obtained.

• Received 24 August 1971

DOI:https://doi.org/10.1103/PhysRevB.5.2382