Abstract
We use density functional theory calculations to show that the 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 interface is found to be less favorable than the greater interface distortion of . Compared to , the latter is predicted to exhibit robust magnetism with a larger saturation moment and a higher Curie temperature. Our results provide support for a “two phase” picture of coexistent superconductivity and ferromagnetism.
- Received 10 June 2014
DOI:https://doi.org/10.1103/PhysRevLett.113.127201
© 2014 American Physical Society