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Sketch of the magnetoplasmonic interferometer consisting of a metallic Au/Co/Au trilayer covered by a thin dielectric film.
Evolution of the SPP wave vector modulation with the Co layer position for a set of metallic multilayers covered with 60 nm of PMMA and without coverage.
(a) Calculated modulation enhancement (left axis) and SPP propagation distance (right axis) as a function of the thickness of PMMA coverage for an Au/Co/Au trilayer with . (b) Normalized magnetic field intensity calculated at the center of the Co layer. The dashed line marks the thickness value used experimentally, 60 nm. (c) Normalized magnetic field intensity distribution along the vertical direction for three PMMA thicknesses: 0, 100, and 700 nm. The different background colors account for the different materials in the structure.
Figure of merit for an Au/Co/Au trilayer with and three different dielectrics.
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