title: Origin of the magnetoelectric coupling effect in Pb(Zr0.2Ti0.8)O{3}/La{0.8}Sr{0.2}MnO{3} Multiferroic heterostructures.
abstract: The electronic valence state of Mn in Pb(Zr0.2Ti0.8)O{3}/La{0.8}Sr{0.2}MnO{3} multiferroic heterostructures is probed by near edge x-ray absorption spectroscopy as a function of the ferroelectric polarization. We observe a temperature independent shift in the absorption edge of Mn associated with a change in valency induced by charge carrier modulation in the La0.8Sr0.2MnO3, demonstrating the electronic origin of the magnetoelectric effect. Spectroscopic, magnetic, and electric characterization shows that the large magnetoelectric response originates from a modified interfacial spin configuration, opening a new pathway to the electronic control of spin in complex oxide materials.
authors.affiliation: Department of Applied Physics and CRISP, Yale University, New Haven, Connecticut 06520, USA. carlos.vaz@yale.edu
authors.forename: C A F
authors.initials: CA
authors.lastname: Vaz
authors.forename: J
authors.initials: J
authors.lastname: Hoffman
authors.forename: Y
authors.initials: Y
authors.lastname: Segal
authors.forename: J W
authors.initials: JW
authors.lastname: Reiner
authors.forename: R D
authors.initials: RD
authors.lastname: Grober
authors.forename: Z
authors.initials: Z
authors.lastname: Zhang
authors.forename: C H
authors.initials: CH
authors.lastname: Ahn
authors.forename: F J
authors.initials: FJ
authors.lastname: Walker