The Relaxation of Photoelectron and Auger Energies in Solid Phosphorus Compounds

Relaxation energies, recently published by Franke et al. [13] will be discussed together with physical and chemical quantities, related to the properties of the initial and final state of the photoemission process in solid phosphorus compounds. Nearest neighbour contributions and effects of higher coordination spheres on core hole screening have been identified by comparison to molecules and systematic variations of the environment in solids. A local approach to the polarization energy has been successfully applied to predict the nearest neighbour effects in polar-covalent compounds. Contributions from second and higher coordination of the photoinized atom are reasonably reflected in the dielectric model using macroscopic quantities. Correlations of extraatomic relaxation to gap energies and electronegativities of the chemical environments are reported for phosphorus compounds and will be addressed qualitatively to dielectric and ground state properties.