Abstract
An oxide heterostructure made of manganite bilayers and ferroelectric perovskites is predicted to lead to the
full control of magnetism when switching the ferroelectric polarizations. By using asymmetric polar interfaces
in the superlattices, more electrons occupy the Mn layer at the n-type interface side than at the p-type side. This
charge disproportionation can be enhanced or suppressed by the ferroelectric polarization. Quantum model and
density functional theory calculations reach the same conclusion: a ferromagnetic-ferrimagnetic phase transition
with maximal change >90% of the total magnetization can be achieved by switching the polarization’s direction.
This function is robust and provides full control of the magnetization’s magnitude, not only its direction, via
electrical methods.
