6 September 2017 Active mid IR plasmonics using giant magneto resistance
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Abstract
Here we present our proposal and initial results on the magnetic field control of plasmon resonances in the mid IR region by the use of the Magneto-Refractive (MR) effect, i.e., a change in the optical properties of the system by magnetic field controlled electrical resistivity. For this we select a Giant Magneto Resistance model system (a Au/Permalloy multilayer), for which changes in resisitivity of the order of 10% by the application of small (of the order of 20 Oe) magnetic fields have been reported. The experiments are carried out in a dedicated magnetic field FTIR (M-FTIR) spectrometer.
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Gaspar Armelles, Alfonso Cebollada, Fernando García, Lorena Torné, María Luisa Dotor, "Active mid IR plasmonics using giant magneto resistance", Proc. SPIE 10357, Spintronics X, 103571Q (6 September 2017); doi: 10.1117/12.2273690; https://doi.org/10.1117/12.2273690
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