title: Optical magnetoelectric effect of patterned oxide superlattices with ferromagnetic interfaces.
abstract: Nonreciprocal directional dichroism, termed the optical magnetoelectric (OME) effect, has been observed in patterned superlattice (SL) composed of perovskite oxides, LaMnO3, SrMnO3, and LaAlO3. Such a tricolor SL with ferromagnetic interfaces is expected to artificially break both space-inversion and time-reversal symmetries and hence to show the OME effect. The Bragg diffraction from the grating structure with a period of 4 microm fabricated on the SL was employed to sensitively detect the OME effect, yielding the relative change of the diffracted light intensity (~0.2%-0.5%) upon a reversal of either the in-plane magnetization or the propagation vector of the diffracted light.
authors.affiliation: Spin Superstructure Project (SSS) and Multiferroics Project (MF), ERATO, Japan Science and Technology Agency (JST), c/o National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 4, Tsukuba, Ibaraki, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Kida
authors.forename: H
authors.initials: H
authors.lastname: Yamada
authors.forename: H
authors.initials: H
authors.lastname: Sato
authors.forename: T
authors.initials: T
authors.lastname: Arima
authors.forename: M
authors.initials: M
authors.lastname: Kawasaki
authors.forename: H
authors.initials: H
authors.lastname: Akoh
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura