Abstract
The bulk-sensitive Ce $4f$ spectral weights of various Ce compounds including ${\mathrm{CeFe}}_{2},$ ${\mathrm{CeNi}}_{2},$ and ${\mathrm{CeSi}}_{2}$ were obtained with the resonant photoemission technique at the Ce $3d$ edge. We found that the line shapes change significantly with the small change of the incident photon energy. Detailed analysis showed that this phenomenon results primarily from the Auger transition between different multiplet states of the Ce $\underset{\ifmmode\bar\else\textasciimacron\fi{}}{{3d}_{5/2}}{4f}^{2}$ (bar denotes a hole) electronic configuration in the intermediate state of the resonant process. This tells us that extra care should be taken for the choice of the resonant photon energy when extracting Ce $4f$ spectral weights from the Ce $3d\ensuremath{-}\mathrm{e}\mathrm{d}\mathrm{g}\mathrm{e}$ resonant photoemission spectra. The absorption energy corresponding to the lowest multiplet structure of the Ce $\underset{\ifmmode\bar\else\textasciimacron\fi{}}{{3d}_{5/2}}{4f}^{2}$ configuration seems to be the logical choice to obtain genuine Ce $4f$ spectral weight from the Ce $3d$ resonant photoemission data.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.