title: Nonlinear magneto-optical kerr rotation of an oxide superlattice with artificially broken symmetry.
abstract: Simultaneously broken time-reversal and spatial-inversion symmetries can be realized in the epitaxially grown oxide "tricolor" superlattices composed of three sequential kinds of perovskite layers including a ferromagnetic one (manganese oxide). As a generic feature of such a system, the magnetic-field-induced second-harmonic generation and the resultant Kerr rotation of second-harmonic light were demonstrated. The signal intensity probes the interface magnetization of the superlattice, where temperature variation is shown to be distinct from the bulk feature.
authors.affiliation: Spin Superstructure Project, ERATO, Japan Science and Technology Corporation (JST), AIST Tsukuba Central 4, Tsukuba 305-8562, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Ogawa
authors.forename: H
authors.initials: H
authors.lastname: Yamada
authors.forename: T
authors.initials: T
authors.lastname: Ogasawara
authors.forename: T
authors.initials: T
authors.lastname: Arima
authors.forename: H
authors.initials: H
authors.lastname: Okamoto
authors.forename: M
authors.initials: M
authors.lastname: Kawasaki
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura