Authors: Pappas, SD; Lang, P; Eul, T; Hartelt, M; Garcia-Martin, A; Hillebrands, B; Aeschlimann, M; Papaioannou, ET
Article.
Nanoscale. vol: 12. page: 2040-3364.
Date: APR 7. 2020.
Doi: 10.1039/d0nr00198h.
Abstract:
We unravel the underlying near-field mechanism of the enhancement of the magneto-optical activity of bismuth-substituted yttrium iron garnet films (Bi:YIG) loaded with gold nanoparticles. The experimental results show that the embedded gold nanoparticles lead to a broadband enhancement of the magneto-optical activity with respect to the activity of the bare Bi:YIG films. Full vectorial near- and far-field simulations demonstrate that this broadband enhancement is the result of a magneto-optically enabled cross-talking of orthogonal localized plasmon resonances. Our results pave the way to the on-demand design of the magneto-optical properties of hybrid magneto-plasmonic circuitry..
