Interaction effects on the magneto-optical response of magnetoplasmonic dimers

The effect that dipole-dipole interactions have on the magneto-optical (MO) properties of magnetoplasmonic dimers is theoretically studied. The specific plasmonic versus magnetoplasmonic nature of the dimer's metallic components and their specific location within the dimer play a crucial role i...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2014-05, Vol.89 (20), Article 205419
Main Authors: de Sousa, N., Froufe-Pérez, L. S., Armelles, G., Cebollada, A., González, M. U., García, F., Meneses-Rodríguez, D., García-Martín, A.
Format: Article
Language:English
Subjects:
Condensed matter
Dimers
Magnetic properties
Plasmonics
Spectra
Stacking
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Summary:The effect that dipole-dipole interactions have on the magneto-optical (MO) properties of magnetoplasmonic dimers is theoretically studied. The specific plasmonic versus magnetoplasmonic nature of the dimer's metallic components and their specific location within the dimer play a crucial role in the determination of these properties. We find that it is possible to generate an induced MO activity in a purely plasmonic component, even larger than that of the MO one, therefore dominating the overall MO spectral dependence of the system. Adequate stacking of these components may allow one to obtain, for specific spectral regions, larger MO activities in systems with a reduced amount of MO metal and therefore with lower optical losses. Theoretical results are contrasted and confirmed with experiments for selected structures.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.89.205419