Abstract
An investigation of the 3d, 4p, and 4d photoelectron spectra of La(OH is reported. The photoionization process creates final states I and II, a core hole and a core hole with a transfer of an electron from the ligands to a 4f orbital, respectively. Spectroscopic evidence strongly suggests that final state I {( 34, ), [(45, ], or ( 44, )} is at a lower binding energy than final state II {( 34, -), [ (45, -], or ( 44, -)}. The energy difference between final states I and II can be explained quite readily through the reconciliation of the interatomic secondary electron coexcitation theory (‘‘shake up’’) and the extra-atomic relaxation theory (‘‘shake down’’ or ‘‘well screened’’). Multiplet structures of the final state II related to the electron-hole exchange are clearly observed.
- Received 15 October 1984
DOI:https://doi.org/10.1103/PhysRevB.31.4039
©1985 American Physical Society