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arXiv · 1410.0794

Maximization of surface-enhanced transversal magneto-optic Kerr effect in Au/Co/Au thin films

César Aurelio Herreño-Fierro·Edgar J. Patiño
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Abstract

In order to maximize the transversal magneto-optic Kerr effect (T-MOKE) of a Au/Co/Au structure, we propose a method to obtain the optimum thickness values. A criteria based on preserving good plasmonic properties has been included as part of this method. Using the theoretical prediction, we grew Au/Co/Au trilayers and perform optical andMO characterization using the Kretschmann configuration. The results admit very easy interpretation in terms of the interaction between the magneto-optical and plasmonic properties dictating the optimal thicknesses of the structure. Moreover, we have grown and characterized the optimized structure finding good agreement with theory reaching, for a 532nm green laser, amaximal surface magneto-optic (MO) signal enhancement of close to nine folds with respect to the signal without plasmonic excitation.

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César Aurelio Herreño-Fierro, Edgar J. Patiño. 2014-10-03. Maximization of surface-enhanced transversal magneto-optic Kerr effect in Au/Co/Au thin films. https://doi.org/10.1002/pssb.201451380

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