Magnetized spiral chains of plasmonic ellipsoids for one-way optical waveguides
When a linear chain of plasmonic nanoparticles is subject to longitudinal magnetic field, it exhibits optical Faraday rotation. If the magnetized nanoparticles are plasmonic ellipsoids arranged as a spiral chain, the interplay between the Faraday rotation and the geometrical spiral rotation (structu...
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| Published in | Physical review letters Vol. 105; no. 23; p. 233904 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.12.2010
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| Online Access | Get more information |
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| Summary: | When a linear chain of plasmonic nanoparticles is subject to longitudinal magnetic field, it exhibits optical Faraday rotation. If the magnetized nanoparticles are plasmonic ellipsoids arranged as a spiral chain, the interplay between the Faraday rotation and the geometrical spiral rotation (structural chirality) can strongly enhance nonreciprocity. This interplay forms a waveguide that permits one-way propagation only, within four disjoint frequency bands, two bands for each direction. |
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| ISSN: | 1079-7114 |
| DOI: | 10.1103/physrevlett.105.233904 |