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O: Fachverband Oberflächenphysik
O 59: Plasmonics and Nanooptics
O 59.10: Poster
Dienstag, 21. März 2017, 18:30–20:30, P2-OG1
Magneto-plasmonic interactions in Ni/Au, Co/Au and YIG/Au nanostructures — •Ellen R. Wiedemann1,3, Jochen Greser1, Björn Heinz1, Bert Lägel2, Sandra Wolff2, Gereon Niedner-Schatteburg3, Burkard Hillebrands1, and Evangelos Th. Papaioannou1 — 1Fachbereich Physik, TU Kaiserslautern, Germany — 2Nano Structuring Center, TU Kaiserslautern, Germany — 3Fachbereich Chemie, TU Kaiserslautern, Germany
Magnetoplasmonics is an emergent research field that aims to strongly modify the magneto-optic response in the presence of surface plasmons and to control plasmonic resonances with magnetic fields [1,2] In this work we show a new way to manipulate the magneto-optic response of magnetoplasmonic structures, taking advantage of the presence of the magnetic layer. We use patterned Ni, Co and YIG films covered with Au in the form of 2D (antidot lattices) and 1D (stripes) patterns. Different thicknesses and different geometries of the patterns generate a large enhancement of the polar and transverse magneto-optical signal close to SPP resonances. Furthermore we reveal that the choice of a ferrimagnetic dielectric (YIG) or ferrromagnetic metal leads to different enhancement factors of the magneto-plasmonic interaction. These magneto-plasmonic interactions will be shown by magnetical, optical and magnetooptical methods including magnetooptical Kerr-effect, ellipsometry, and Brillouin light scattering measurements.
[1] M. Rollinger et al. Nano Letters 16, 2432 (2016).
[2] E. Melander et al. http://arxiv.org/abs/1611.00078 (2016).