%0 Journal Article
%K Perovskite
%K Heavy metals
%K Iridium compounds
%K Strontium compounds
%K X ray scattering
%K Transition metals
%K Spin-orbit couplings
%K iridates
%K X rays
%K Heavy metal elements
%K Magnon excitations
%K Oxygen K-edge
%K Resonant inelastic x-ray scattering
%K RIXS
%K Transition metal elements
%A X Liu
%A M.P.M Dean
%A J F Liu
%A S.G Chiuzbəian
%A N Jaouen
%A A Nicolaou
%A W.G Yin
%A C.R Serrao
%A Ramamoorthy Ramesh
%A H Ding
%A J.P Hill
%B Journal of Physics Condensed Matter
%D 2015
%G eng
%I Institute of Physics Publishing
%R 10.1088/0953-8984/27/20/202202
%T Probing single magnon excitations in Sr2IrO4 using O K-edge resonant inelastic x-ray scattering
%V 27
%X Resonant inelastic x-ray scattering (RIXS) at the L-edge of transition metal elements is now commonly used to probe single magnon excitations. Here we show that single magnon excitations can also be measured with RIXS at the K-edge of the surrounding ligand atoms when the center heavy metal elements have strong spin-orbit coupling. This is demonstrated with oxygen K-edge RIXS experiments on the perovskite Sr2IrO4, where low energy peaks from single magnon excitations were observed. This new application of RIXS has excellent potential to be applied to a wide range of magnetic systems based on heavy elements, for which the L-edge RIXS energy resolution in the hard x-ray region is usually poor. © 2015 IOP Publishing Ltd.