High energy resonant photoemission and resonant Auger spectroscopy in mixed valent Ce compounds

In CeRh3 and Ce7Rh3 compounds, strong resonant effects are observed in the Ce 3d and 4d photoemission spectra at the Ce L-3 and M-4.5 absorption edges respectively. These resonances show unambiguously that interference effect s exist in core level spectroscopies. In the CeRh3 mixed valent compound, t he resonances of photoemission peaks corresponding to 4f(0), 4f(1) and 4f(2 ) final state character occur at different photon energies, making it possi ble to unravel the X-ray absorption profiles. Moreover, resonant L3M4.5N4.5 Raman Auger lines are observed up to 10 eV above the L-3 absorption edge, showing the strong localized character of the core excited state. (C) 1999 Elsevier Science B.V. All rights reserved.