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O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.70: Poster
Mittwoch, 16. März 2011, 17:30–21:00, P4
Kerr-microscopy of magnetic nanostructures — •Christian Dicken1,2, Klas Lindfors1,2, Mario Hentschel1,2, and Markus Lippitz1,2 — 1Max-Planck-Institute for Solid State Research, Stuttgart — 24th Physics Institute, University of Stuttgart
Merging the fields of micromagnetism and plasmonics promises many new applications in both industry and science. As a first step towards experiments on micromagnetic particles, we use a combination of Sagnac interferometry and an improved sample design to measure the magnetization of isolated nickel-gold particle systems. With the present technique, we were able to observe the Kerr rotation of particles smaller than 90nm in diameter with an SNR of 28. We will show a model that describes the size dependence of the signal and allows us to adapt our sample design for even better performance.