Hidden Covalent Insulator and Spin Excitations in SrRu2O6

Explore the theoretical study of SrRu2O6, a high TN antiferromagnetic insulator with ruthenium-oxide honeycomb layers, in this 20-minute conference talk from the Workshop on "Spin-Orbit Entangled Quantum Magnetism" at the Erwin Schrödinger International Institute. Delve into the combination of Density Functional Theory (DFT) and Dynamical Mean Field Theory (DMFT) to investigate the material's properties. Examine the competition between Hubbard interaction, Hund's exchange, and electron hopping amplitudes, and discuss the nature of the paramagnetic state. Learn about the calculation of two-particle correlation functions to reproduce measured low-energy magnon spectra and S=1/2 points to S = 3/2 excitations. Investigate the impact of Hund's exchange strength on magnon spectra and explore the relationship between antiferromagnetic correlations and the covalent insulator state. Gain insights into recent research findings and their implications for understanding spin-orbit entangled quantum magnetism in materials with partially filled 4d shells.