Abstract
Although several multiferroic materials or heterostructures have been extensively studied, finding strong
magnetoelectric couplings for the electric field control of the magnetization remains challenging. Here, a
novel interfacial magnetoelectric coupling based on three components (ferroelectric dipole, magnetic
moment, and antiferromagnetic order) is analytically formulated. As an extension of carrier-mediated
magnetoelectricity, the new coupling is shown to induce an electric-magnetic hysteresis loop. Realizations
employing BiFeO3 bilayers grown along the [111] axis are proposed. Without involving magnetic phase
transitions, the magnetization orientation can be switched by the carrier modulation driven by the field
effect, as confirmed using first-principles calculations.
