Photoemission study of the ferromagnetic Kondo system CeRh3B2

A. Fujimori, T. Takahashi, A. Okabe, M. Kasaya, T. Kasuya

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24 Citations (Scopus)

Abstract

We have studied the electronic structure of CeRh3B2, which has an anomalously high ferromagnetic ordering temperature, by photoemission and Auger-electron spectroscopy. The Ce 4f occupancy nf0.85 evaluated from the Ce 3d core-level photoemission spectrum indicates a moderately strong valence fluctuation in the Kondo regime. Rh d derived valence-band photoemission spectra are found to be in good agreement with the results of band-structure calculations when a strong energy dependence of the hole lifetime is taken into account. This observation and the deviation of the Rh M4,5VV Auger spectrum from the self-convolution of the Rh d partial density of states provide evidence for electron correlation within the Rh d band of order of U=12 eV. We discuss a possible effect of the latter electron correlation on the ferromagnetic instability of this compound.

Original languageEnglish
Pages (from-to)6783-6787
Number of pages5
JournalPhysical Review B
Volume41
Issue number10
DOIs
Publication statusPublished - 1990 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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