Fig. 7
From: Coupled Cu and Mn charge and orbital orders in YBa2Cu3O7/Nd0.65(Ca1-ySry)0.35MnO3 multilayers
Cluster calculations of the RIXS signal due to the dd-transitions of the interfacial Cu ions. a Schematic of the cluster containing the interfacial Cu and Mn ions that was used to calculate the RIXS spectra. b Calculated RIXS spectra with the dd-excitations at the Cu L3-edge for two representative values of the Coulomb interaction on the Mn site Udd at which the holes of the Cu ion reside primarily on the dx2-y2 (red line) and the d3z2-r2 levels (blue line), respectively. c Calculated values of the hole occupation of the dx2-y2 and d3z2-r2 orbitals as a function of Udd which indicate a sudden change at around Udd = 6.4 eV. d Sketch of the orbital order at the NCSMO/YBCO interface showing the alternation of the partially unoccupied Cu 3d orbitals (orange) which follows the Mn–COO (light and dark green symbols). The colored numbers indicate the average hole occupation for the Cu and Mn d states
