Figure 4
A comparison of the magnetic RIXS excitations computed using DMRG for a 20-site t-J chain (solid red line) and multi-orbital pd model (dashed blue line) with twenty unit cells at half filling. Results are shown for the (a) ΔS = 0 and (b) ΔS = 1 channels. The parameters for the t-J model are t = 0.5 eV, J = 0.325 eV, VC = 4 eV, Γ = 0.2 eV, and ωin = 0.14 eV. The parameters for the multi-orbital model are given in the main text. The incident photon energy is ωin = 2.5 eV, the inverse core hole lifetime is Γ = 0.2 eV, and the core hole potential is VC = 4 eV. The results for the t-J model have been scaled by a factor of 0.26 such that the maximum intensity of the ΔS = 1 excitations are the same at the zone boundary.
