Magnetic excitation in resonant inelastic x-ray scattering of SrIrO: A localized spin picture
arXiv:1312.1071 · doi:10.1103/PhysRevB.89.064410
Abstract
We study the magnetic excitations in 5d transition-metal oxide SrIrO on the basis of the Heisenberg model with small anisotropic terms on a square lattice. We calculate the correlation functions by using the Green's functions in the spin-wave approximation. The spin waves are split into two modes with slightly different energies due to the anisotropic terms. It is shown that the spin correlation functions of the y and z components are composed of a single peak corresponding to each mode. We analyze the process of resonant inelastic x-ray scattering (RIXS) without relying on the fast collision approximation to obtain the local scattering operator. The RIXS intensity is derived as a sum of the correlation functions of the y and z spin components. We demonstrate that the RIXS intensity as a function of energy shows two-peak structure brought about by the two modes, which could be observed in the RIXS experiment.
Latex, 10 pages, 3 figures, Descriptions are revised in Sects. II.D, III.B.4, and V
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- Analysis of resonant inelastic x-ray scattering from SrIrO in an itinerant-electron approach
- Magnetic excitations in hole-doped Sr2IrO4: A comparison with electron-doped cuprates
- Interplay between Hund's coupling and spin-orbit interaction on elementary excitations in Sr2IrO4
- Resonant inelastic x-ray scattering on single-magnons at oxygen -edges
- Collective excitations in NaIrO