title: Anisotropic Polar Magneto-Optic Kerr Effect of Ultrathin Fe/GaAs(001) Layers due to Interfacial Spin-Orbit Interaction.
abstract: We report the observation of the anisotropic polar magneto-optical Kerr effect in thin layers of epitaxial Fe/GaAs(001) at room temperature. A clear twofold symmetry of the Kerr rotation angle depending on the orientation of the linear polarization of the probing laser beam with respect to the crystallographic directions of the sample is detected for ultrathin magnetic films saturated out of the film plane. The amplitude of the anisotropy decreases with increasing Fe film thickness, suggesting that the interfacial region is the origin of the anisotropy. The twofold symmetry is fully reproduced by model calculations based on an interference of interfacial Bychkov-Rashba and Dresselhaus spin-orbit coupling.
authors: Institute of Experimental and Applied Physics, University of Regensburg, Regensburg 93040, Germany.
authors: M
authors: M
authors: Buchner
authors: Institute of Theoretical Physics, University of Regensburg, Regensburg 93040, Germany.
authors: P
authors: P
authors: Högl
authors: Institute of Theoretical Physics, University of Regensburg, Regensburg 93040, Germany.
authors: S
authors: S
authors: Putz
authors: Institute of Theoretical Physics, University of Regensburg, Regensburg 93040, Germany.
authors: M
authors: M
authors: Gmitra
authors: Department of Materials, ETH Zürich, Zürich 8093, Switzerland.
authors: S
authors: S
authors: Günther
authors: Institute of Experimental and Applied Physics, University of Regensburg, Regensburg 93040, Germany.
authors: M A W
authors: MA
authors: Schoen
authors: Institute of Experimental and Applied Physics, University of Regensburg, Regensburg 93040, Germany.
authors: M
authors: M
authors: Kronseder
authors: Institute of Experimental and Applied Physics, University of Regensburg, Regensburg 93040, Germany.
authors: D
authors: D
authors: Schuh
authors: Institute of Experimental and Applied Physics, University of Regensburg, Regensburg 93040, Germany.
authors: D
authors: D
authors: Bougeard
authors: Institute of Theoretical Physics, University of Regensburg, Regensburg 93040, Germany.
authors: J
authors: J
authors: Fabian
authors: Institute of Experimental and Applied Physics, University of Regensburg, Regensburg 93040, Germany.
authors: C H
authors: CH
authors: Back