Dresden 2014 – scientific programme

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O: Fachverband Oberflächenphysik

O 37: Posters: Plasmonics, Electronic Structure and Spin-Orbit Interaction, Semiconductor and Insulator Surfaces, Nanostructures

O 37.4: Poster

Tuesday, April 1, 2014, 18:30–22:00, P2

Magneto-optic surface plasmon resonance of Au/IrMn/Co/Au exchange biased layer systems — •Sebastian Kübler, Nicolas Müglich, and Arno Ehresmann — Department of Physics, CINSaT, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel

The magneto-optic surface plasmon resonance (MOSPR) in transverse geometry of glass/Au/IrMn/Co/Au/dielectric exchange biased (EB) thin film systems has been studied as a function of the Au-cap layer thickness for the dielectric air and water. The results show that it is possible to achieve either an optimal steepness of the reflectivity as compared to a glass/Au(48 nm)/dielectric layer system or to maximize the magneto-optic activity. As the Au-cap layer thickness is increased the magneto-optic activity is reduced whereas the steepness of the reflectivity in the range of the resonance is raised. The width of the reflectivity curves and the magneto-optic signals are broadened for thin Au capping layers. The presented results demonstrate that the EB system under investigation can be optimized by adjustment of the Au-cap layer thickness for SPR and MOSPR based biosensing applications.