Resonant photoemission experiments at the 4d threshold have been carried out in ultra-thin films of cerium deposited on monocrystalline Fe and Pd. In the Ce/Fe system, we have unambiguously demonstrated the reduced Ce configuration admixture in the surface layer by evaporating one monolayer of an appropriate element to suppress the surface contribution. In the Ce/Pd system, the spectra clearly show an exceptional configuration mixture suggesting an intermediate valence regime but they cannot be described in the single impurity Anderson model
4f spectral function of cerium in Ce/Fe(100) and Ce/Pd(100) interfaces
1999
Abstract
Resonant photoemission experiments at the 4d threshold have been carried out in ultra-thin films of cerium deposited on monocrystalline Fe and Pd. In the Ce/Fe system, we have unambiguously demonstrated the reduced Ce configuration admixture in the surface layer by evaporating one monolayer of an appropriate element to suppress the surface contribution. In the Ce/Pd system, the spectra clearly show an exceptional configuration mixture suggesting an intermediate valence regime but they cannot be described in the single impurity Anderson modelFile in questo prodotto:
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