Exotic phases induced by strong spin-orbit coupling in ordered double perovskites
Exotic phases induced by strong spin-orbit coupling in ordered double perovskites
We construct and analyze a microscopic model for insulating rocksalt ordered double perovskites, with the chemical formula ${A}_{2}B{B}^{\ensuremath{'}}{\text{O}}_{6}$, where the ${B}^{\ensuremath{'}}$ atom has a $4{d}^{1}$ or $5{d}^{1}$ electronic configuration and forms a face-centered-cubic lattice. The combination of the triply degenerate ${t}_{2g}$ orbital and strong spin-orbit coupling forms local quadruplets with …