Multiplet splitting effects on core-level photoemission and inverse-photoemission spectra of uranium intermetallic compounds

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Abstract

The present paper discusses the role of U 5f-5f exchange interaction (J) in the inverse photoemission spectrum (IPES) and the U 4f x-ray photoemission spectrum (XPS) of uranium intermetallic compounds. The origin of the broad main peak in the IPES of UPd3 and UPd2Al3, for instance, is ascribed to the exchange coupling effects of 5f electrons. In other words, whether the ground state is of high-spin or of low-spin is directly reflected in the width of the IPES. On the other hand, the interpretation for the U 4f photoemission spectrum is not so greatly influenced by J. The full-multiplet calculations are also performed for an U4+ ion for comparison.

Original languageEnglish
Pages (from-to)752-755
Number of pages4
Journaljournal of the physical society of japan
Volume68
Issue number3
DOIs
Publication statusPublished - Mar 1999

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Keywords

  • Impurity Anderson model
  • Inverse photoemission
  • Multiplet splitting
  • U 4f photoemission

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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