Abstract
A strictly ab initio many-electron theory was used to calculate the x-ray photoelectron spectroscopy (XPS) of the free and ions. The calculations, based on relativistic Dirac-Fock self-consistent field (DF-SCF) and Dirac configuration interaction (DCI) wave functions (WF’s), indicate that the atomic spectra have a considerable multiplet structure. However, the multiplet splitting, which is mainly manifest as a broadening of the and lines, is not as strong as for the first-row transition metals. As expected, the primary peaks are broader and have more associated satellite structure than does . A comparison of a synthetic spectrum for with the observed XPS of indicates that interatomic, solid-state, effects may decrease the multiplet and spin-orbital splitting, relative to the free ion. Notably, the satellite characteristic of is absent from the calculated XPS of .
- Received 7 October 2004
DOI:https://doi.org/10.1103/PhysRevB.71.195121
©2005 American Physical Society