SPECTROSCOPIC EVIDENCE OF CONFIGURATION-DEPENDENT HYBRIDIZATION IN A CERIUM COMPOUND - CERH3

Evidence is given for a configuration dependent hybridization in the s pectroscopy of a strongly hybridized compound like CeRh3. This is achi eved by comparing the results of 4f inverse photoemission and Ce 3d co re level spectroscopies to the predictions of the single impurity Ande rson model (SIAM). This analysis shows that the SIAM is not able to qu antitatively describe, within a single set of parameters, the results of bath spectroscopies. A considerably better agreement with experimen ts is instead obtained when changes in the hybridization parameter are allowed in the different final states. This result suggests that the hybridization between f and band states strongly depends on the 4f con figuration as theoretically predicted.