Magneto-Optical Activity in High Index Dielectric Nanoantennas

The magneto-optical activity, namely the polarization conversion capabilities of high-index, non-absorbing, core-shell dielectric nanospheres is theoretically analyzed. We show that, in analogy with their plasmonic counterparts, the polarization conversion in resonant dielectric particles is linked...

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Bibliographic Details
Published in:Scientific reports 2016-08, Vol.6 (1), p.30803-30803, Article 30803
Main Authors: de Sousa, N., Froufe-Pérez, L. S., Sáenz, J. J., García-Martín, A.
Format: Article
Language:English
Subjects:
639/624/400/1021
639/624/400/1101
Antennas
Electromagnetic fields
Electromagnetism
Humanities and Social Sciences
Magnetic fields
multidisciplinary
Nanoparticles
Physics
Polarization
Science
Silicon
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Summary:The magneto-optical activity, namely the polarization conversion capabilities of high-index, non-absorbing, core-shell dielectric nanospheres is theoretically analyzed. We show that, in analogy with their plasmonic counterparts, the polarization conversion in resonant dielectric particles is linked to the amount of electromagnetic field probing the magneto-optical material in the system. However, in strong contrast with plasmon nanoparticles, due to the peculiar distribution of the internal fields in resonant dielectric spheres, the magneto-optical response is fully governed by the magnetic (dipolar and quadrupolar) resonances with little effect of the electric ones.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep30803