Fig. 2: RIXS spectra of the Sr2IrO4/Sr2RuO4 heterostructure.
From: Tunable magnons of an antiferromagnetic Mott insulator via interfacial metal-insulator transitions
a Energy loss spectra of the Sr2IrO4/Sr2RuO4 heterostructure at 20 K with different momenta in the Brillouin zone. The inset illustrates high symmetry points of both the undistorted tetragonal unit cell and the magnetic unit cell. b Image plot of the energy loss spectra shown in (a), highlighting the dispersive magnon and spin-orbit exciton modes. The detection of well-defined dispersive features confirms the high crystalline quality of the Sr2IrO4 thin film. The orange dashed line in (a, b) serves as a guide to the magnon dispersion. The intensity scale bar is in arbitrary units. c Schematic of the horizontal scattering geometry used during the RIXS measurements.
