1. Magnetoelectric effect at the SrRuO3/BaTiO3 (001) interface: An ab initio study.
- Author
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Niranjan, Manish K., Burton, J. D., Velev, J. P., Jaswal, S. S., and Tsymbal, E. Y.
- Subjects
FERROMAGNETIC materials ,FERROELECTRIC crystals ,DIELECTRIC relaxation ,POLARIZATION of electromagnetic waves ,INDUCED polarization - Abstract
Ferromagnet/ferroelectric interface materials have emerged as structures with strong magnetoelectric coupling that may exist due to unconventional physical mechanisms. Here we present a first-principles study of the magnetoelectric effect at the ferromagnet/ferroelectric SrRuO
3 /BaTiO3 (001) interface. We find that the exchange splitting of the spin-polarized band structure, and therefore the magnetization, at the interface can be altered substantially by reversal of the ferroelectric polarization in the BaTiO3 . These magnetoelectric effects originate from the screening of polarization charges at the SrRuO3 /BaTiO3 interface and are consistent with the Stoner model for itinerant magnetism. [ABSTRACT FROM AUTHOR]- Published
- 2009
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