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A new method of directly determining the core–hole effect in the Ce L3 XAS of mixed valence Ce compounds—An application of resonant X-ray emission spectroscopy by A. Kotani; K.O. Kvashnina; S.M. Butorin; P. Glatzel is a Physics and Astronomy article available to read on EtoBox.

What is A new method of directly determining the core–hole effect in the Ce L3 XAS of mixed valence Ce compounds—An application of resonant X-ray emission spectroscopy about?

Using a simplified model, we calculate resonant X-ray emission (RXE) spectra with Ce 2p to 5d excitation and Ce nl to 2p de-excitation for mixed valence Ce compounds, where nl is 3d or valence states. If the core-hole effect is large to play an important role in the Ce L 3 XAS, the RXE spectral features for nl = 3d and valence states are significantly different, but if it is negligibly small, they are essentially the same. Therefore, these RXE spectra are useful as a new powerful method of directly determining the core-hole effect in the L 3 XAS. More detailed theoretical calculations of these RXE spectra are made for CeO 2 , and compared with new experimental data, indicating the importance of the core-hole effect. Similar investigations are desirable for some metallic mixed valence Ce compounds in which the core-hole effect is controversial. Finally, we point out that for nl = 5d we can observe the resonant inelastic X-ray scattering spectra corresponding to the charge-transfer excitations or Kondo resonance excitations.

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Author

A. Kotani; K.O. Kvashnina; S.M. Butorin; P. Glatzel

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0368-2048)

Published

2011

Language

EN

Field

Physics and Astronomy (Physical Sciences)