Dimensionality Driven Spin-Flop Transition in Layered Iridates

J. W. Kim, Y. Choi, Jungho Kim +6

Using resonant x-ray diffraction, we observe an easy c-axis collinear antiferromagnetic structure for the bilayer Sr${}_3$Ir${}_2$O${}_7$, a significant contrast to the single layer Sr$_…