Institut für Festkörperphysik
Tuesday, 23th March 2021,16:00 s.t.
The talk will be given via Zoom Meeting:
Meeting ID: 960 6275 1637 Passcode: 9ANd8XWj
Core-level spectroscopy of transition metal oxides
Improving energy resolution of core-level photoemission (XPS) experiments in the past ten years has lead to the realization that valuable information about the valence electronic structure can be obtained by this seemingly atomic probe. Similar improvements in resonant inelastic x-ray scattering (RIXS) made this originally chemists’ tool (eV scale) a precious part of physicists’ toolkit (10 meV scale). I will present a computational approach for simulation of core-level spectra based on combination of dynamical mean-field theory with a postprocessing using a specially tailored exact diagonalization method. I will discuss applications of this approach to the calculation of XPS, RIXS and x-ray absorption spectra of selected transition metal oxides such as LaCoO3, V2O3 or monoxides NiO and MnO.