Spin-orbit entangled j=1/2 moments in Ba${}_2$CeIrO${}_6$ -- a frustrated fcc quantum magnet

A. Revelli, C. C. Loo, D. Kiese +16

We establish the double perovskite Ba${}_2$CeIrO${}_6$ as a nearly ideal model system for j=1/2 moments, with resonant inelastic x-ray scattering indicating a deviation of less than 1%…