Electronic Structure of Strongly Correlated Systems
Figure 12
Sketch of the spatial arrangement of exchange interaction parameters between the octahedral sites [155]. Orbitals approximate the occupied minority orbitals of cations. cations are shown by large (blue) spheres. Oxygen atoms are shown by small (green) spheres. Ferromagnetic couplings between cations are shown by the thick (red) lines, whereas antiferromagnetic exchanges depicted by the thin (blue) lines.