Speaker
Jernej Mravlje
(Jozef Stefan Institute)
Description
We investigate the electronic Raman scattering of Sr2RuO4 and Sr2RhO4 using a material-realistic dynamical mean-field theory approach. In the ruthenate compound we identify the low-energy Fermi liquid behavior and point out that the enhanced Raman response at higher energies is a fingerprint of Hund metals. These signatures originate in the two-stage coherence of Hund metals and associated quasiparticle `unrenormalization'. In rhodate compound we explain the origin of the unusually strong electronic Raman scattering peak at finite frequencies and offer a novel interpretation of the signal difference between different channels. We discuss the influence of spin-orbit and vertex corrections.
Author
Jernej Mravlje
(Jozef Stefan Institute)
Co-authors
Antoine Georges
(College de France, CCQ Flatiron)
German Blesio
(Instituto de Física Rosario (CONICET) and Facultad de Ciencias Exactas, Ingeniería y Agri- mensura, Universidad Nacional de Rosario, Rosario, Santa Fe, 2000, Argentina)
Olivier Gingras
Sophie Beck
(TU Wien)