Atomic near-degeneracy for photoemission: Generality of 4f excitations

Paul S. Bagus*, R Broer, Eugene S. Ilton

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

in a previous study of the 3s X-ray photoelectron spectra, XPS, of Mn, we identified a new intra-atomic many-body effect that lead to an similar to 50% increase in the predicted exchange splitting of the main high spin and low spin XPS peaks. The new many-body effect involved the promotion of one electron from the M shell, 3s, 3p, and 3d, into a 4f orbital and a redistribution of the remaining electrons over the M shell orbitals; of particular importance were frustrated Auger configurations. FACs where the 3s shell was filled. In the present work, we demonstrate the general importance of these 4f FACs by showing that they are of comparable importance for increasing the 3s exchange splitting in Ni as they were in Mn. (C) 2008 Published by Elsevier B.V.

Original languageEnglish
Pages (from-to)46-49
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume165
Issue number1-3
DOIs
Publication statusPublished - Sep-2008

Keywords

  • XPS
  • Many-body
  • Exchange splitting
  • TRANSITION-METAL COMPOUNDS
  • CONFIGURATION-INTERACTION
  • MULTIPLET STRUCTURE
  • SPECTRA
  • STATE
  • IONS
  • NIO

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