A Theoretical Study of the Photoelectron Spectra of GeS, GeSe, and GeTe

Abstract

Abstract The valence x‐ray photoelectron spectra of GeS, GeSe, and GeTe are investigated theoretically by means of solid state clusters using the scattered wave method. For GeTe relativistic and non‐relativistic energy band structures are calculated in terms of the KKR method. It is found that the characteristic features of the photoelectron spectra for the germanium chalcogenides under investigation can be interpreted sufficiently well on the basis of the cluster calculations. For GeTe, however, relativistic corrections to the cluster one‐electron energies seem to be indispensable.