Condensed Matter Seminars

Double perovskites are a broad class of transition metal oxides which exhibit a wide range of phenomena - high temperature ferromagnetism, half-metallicity, and Mott insulators with geometrically frustrated magnetism. I will discuss how spin-orbit coupling leads to new physics in these systems. Specifically, I will discuss how ultrathin double perovskite films can support Chern bands and quantum anomalous Hall insulators. Turning to spin dynamics, I will present our work on understanding neutron scattering experiments in half-metallic double perovskites as well as bulk iridium-based Mott insulators where we argue for dominant Kitaev exchange interactions.