We investigate the electronic Raman scattering of Sr2RuO4 using a
material-realistic dynamical mean-field theory approach. We identify the
low-energy Fermi liquid behavior and point out that the enhanced Raman response
at higher energies displays clear signatures of Hund metals physics. These
signatures originate in the two-stage coherence of Hund metals and associated
quasiparticle 'unrenormalization'. In agreement with recent experimental
observations we find a strong dichotomy between the B1g and
B2g response, but our calculations suggest a novel interpretation
of this dichotomy. The B1g response is dominated by the xy
orbital and the B2g response receives contributions from all
orbitals and is strongly affected by interband nesting at finite frequencies.Comment: 7 pages, 4 figures. SM: 5 pages, 8 figure