Partial densities of states from x-ray absorption and Auger electron spectroscopy: Use of core-hole memory

Abstract

Ag [Formula: see text] edge x-ray absorption and [Formula: see text] Auger electron spectra have been measured and simulated for a variety of x-ray electric-field polarization and Auger electron emission directions. The theory relies on density-functional theory, use of the Bethe–Salpeter equation, atomic multiplet theory, and a simplified model for the Auger line shape and its dependence on photon energy. We also demonstrate that partial densities of states for [Formula: see text], [Formula: see text], and [Formula: see text] symmetry partial-wave channels at the Ag site in the solid can be deduced from the experimental measurements with only atomic theoretical input, i.e., with no solid-state theory other than assuming a Fermi edge.