Exchange interaction, electronic structure and magnetic properties of (LaMnO3)m/(SrTiO3)n superlattices: Ab initio study

Abstract In this study, we survey electronic and magnetic structure of the (LaMnO3)m/(SrTiO3)n superlattices with m = 1, 2, 3 and n = 1, 2, 3, 8 in the density functional calculations framework. We find that the electronic and magnetic structure changes with the thickness of the layer, which is in agreement with experimental results. The leakage of the Mn eg electrons from the LaMnO3 side to the SrTiO3 side show different magnetic structures. This in turn affects the interfacial magnetism via the superexchange interaction.