Crystal-field splitting in CeB6 observed by ultrahigh-resolution photoemission spectroscopy

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We report ultrahigh-resolution (ΔE = 8 meV) photoemission spectroscopy on CeB6 to study the electronic structure and the crystal-field splitting. The photoemission spectrum of CeB6 near EF shows two prominent structures; a broad one near EF and a relatively sharp peak at 280 meV. The former is ascribed to the `Kondo resonance peak' at EF while the latter being from the spin-orbit satellite (Ce 4f7/2). In the broad structure near EF, we clearly observed an additional small structure around 60 meV from EF. Numerical simulations based on the single-impurity Anderson model with non-crossing approximation show that this satellite is due to the crystal-field splitting (Γ87) of the Ce 4f5/2 state.

Original languageEnglish
Pages (from-to)729-734
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Publication statusPublished - 2001 Mar
Event8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA
Duration: 2000 Aug 82000 Aug 12


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