Abstract
Using the results of relativistic multiple-scattering theory the origin of spin polarization in core-core-valence (CCV) Auger electron spectroscopy (AES) is discussed. The contributions of core states and the valence band are analysed for the surface layer of bcc Fe(100) as calculated by means of the fully relativistic spin-polarized screened Korringa–Kohn–Rostoker method for layered systems. All possible core-state combinations (different CCV Auger electron spectra) are compared, showing characteristic differences independent of the underlying valence-band density of states.