%0 Journal Article
%T Dilute Magnetism and Spin-Orbital Percolation Effects in Rh-doped Sr2IrO4
%A J. P. Clancy
%A A. Lupascu
%A H. Gretarsson
%A Z. Islam
%A Y. F. Hu
%A D. Casa
%A C. S. Nelson
%A S. C. Lamarra
%A G. Cao
%A Young-June Kim
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevB.89.054409
%X We have used a combination of resonant magnetic x-ray scattering (RMXS) and x-ray absorption spectroscopy (XAS) to investigate the properties of the doped spin-orbital Mott insulator Sr2Ir(1-x)Rh(x)O4 (0.07 < x < 0.70). We show that Sr2Ir(1-x)Rh(x)O4 represents a unique model system for the study of dilute magnetism in the presence of strong spin-orbit coupling, and provide evidence of a doping-induced change in magnetic structure and a suppression of magnetic order at x_c ~ 0.17. We demonstrate that Rh-doping introduces Rh3+/Ir5+ ions which effectively hole-dope this material. We propose that the magnetic phase diagram for this material can be understood in terms of a novel spin-orbital percolation picture.
%U http://arxiv.org/abs/1311.0039v2