title: Inversion of Ferrimagnetic Magnetization by Ferroelectric Switching via a Novel Magnetoelectric Coupling.
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 BiFeO_{3} 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.
authors.affiliation: Department of Physics, Southeast University, Nanjing 211189, China.
authors.forename: Yakui
authors.initials: Y
authors.lastname: Weng
authors.affiliation: Department of Physics, Southeast University, Nanjing 211189, China.
authors.forename: Lingfang
authors.initials: L
authors.lastname: Lin
authors.affiliation: Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA.|Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
authors.forename: Elbio
authors.initials: E
authors.lastname: Dagotto
authors.affiliation: Department of Physics, Southeast University, Nanjing 211189, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Dong