Concentration Waves and Fermi Surfaces in Random Metallic Alloys

Abstract

On the basis of a new first-principles, electronic model for the forces driving clustering and short-range order in metallic alloys, it is argued that observed concentration-dependent peaks in the x-ray and electron diffuse scattering intensities are due to parallel sheets of flat Fermi surface. The positions of the peaks are directly related to the spanning vector ${\stackrel{\ensuremath{\rightarrow}}{\mathrm{k}}}_{0}$.