Recent progress in resonant inelastic x-ray scattering study of iridium compounds

Young-June Kim

 Resonant inelastic x-ray scattering (RIXS) has been extensively used to study electronic excitations in various strongly correlated materials. With its momentum resolving capability and bulk sensitivity, RIXS has been extensively used to study charge and orbital excitations in transition metal oxides. Thanks to the dramatically improved instrumentation in recent years, one can even study spin excitations with the RIXS technique, which has been successfully used to elucidate one-magnon and two-magnon dispersion in La2CuO4. Of particular interest in this talk is the use of RIXS in the study of iridium compounds. Unlike cuprates, studying magnons in iridates with neutron scattering is extremely difficult due to the large neutron absorption of Ir atom, and RIXS is an excellent candidate to supply spin excitation information in iridium compounds. Some examples from our recent Ir L3 edge RIXS studies will be presented.