Abstract
We report resonant inelastic x-ray scattering (RIXS) measurements on ordered double-perovskite samples containing and with and electronic configurations, respectively. In particular, the observed RIXS spectra of and ( = Y, Gd) show sharp intra- transitions, which can be quantitatively understood using a minimal “atomic” Hamiltonian incorporating spin-orbit coupling and Hund's coupling . Our analysis yields with for and with for . Our results provide sharp estimates for Hund's coupling in oxides and suggest that it should be treated on equal footing with spin-orbit interaction in multiorbital transition-metal compounds.
- Received 23 January 2017
DOI:https://doi.org/10.1103/PhysRevB.95.235114
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