Scattering states for very low energy electron spectroscopy

Abstract

A recently developed method for treating scattering states is further investigated and extended. It yields the wave functions as used, for example, in a calculation for electron diffraction at very low energies or for photoemission in the one-step model at vacuum-ultraviolet photon frequencies. The necessity of non-muffin tin potentials at these energies for covalent bond solids is obvious. The method uses a Laue representation, as well as the full direct space, applying also multigrid techniques.