Topological scattering resonances at ultralow frequencies

Physical Review Research, 2020

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DOI 10.1103/physrevresearch.2.023180
Data confidence 85 high
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Abstract

The authors demonstrate a new type of scattering resonances in nonreciprocal plasmonic systems, which may exist, in principle, at arbitrarily low frequencies. These new plasmonic resonances originate from the unidirectional and topological surface plasmon polaritons supported by the internal interfaces of the scatterer.