Resonant photoemission of oxidized Yb: Experiment and theory

Abstract

The oxidation-induced valence change of Yb leads to a single $4f$ hole in the ground state. The creation of the $4{f}^{13}$ configuration which does not exist for any pure rare-earth metal makes it possible to analyze the $4d\ensuremath{\rightarrow}4f$ Fano resonance for a simple system experimentally as well as theoretically. Calculated Fano profiles for the $4{f}^{12}$ final-state multiplets are in good agreement with photoemission measurements taken with the FLIPPER monochromator at Hamburger Synchrotron-strahlungslabor, Deutsches Elektronen-Synchrotron, using synchrotron radiation from the storage ring DORIS.