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 language | English |
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Pages (from-to) | 6783-6787 |
Number of pages | 5 |
Journal | Physical Review B |
Volume | 41 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1990 |
ASJC Scopus subject areas
- Condensed Matter Physics