Octupolar vs Néel Order in Cubic 5$d^2$ double perovskites

Dalini D. Maharaj, Gabriele Sala, Matthew B. Stone +7

We report time-of-flight neutron spectroscopic and diffraction studies of the 5$d^2$ cubic double pervoskite magnets, Ba${}_2$MOsO${}_6$ ($M$ = Zn, Mg, Ca). These cubic materials are a…