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Tuning Ferromagnetism at Interfaces between Insulating Perovskite Oxides
We use density functional theory calculations to show that the ${\mathrm{LaAlO}}_{3}|{\mathrm{SrTiO}}_{3}$ interface between insulating perovskite oxides is borderline in satisfying the Stoner criterion for itinerant ferromagnetism and explore other oxide combinations with a view to satisfying it more amply. The larger lattice parameter of a ${\mathrm{LaScO}}_{3}|{\mathrm{BaTiO}}_{3}$ interface is found to …