Symmetry Engineering of Graphene Plasmonic Crystals.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26154440.
- Also identified by DOI 10.1021/acs.nanolett.5b00970.
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Abstract
The dispersion relation of plasmons in graphene with a periodic lattice of apertures takes a band structure. Light incident on this plasmonic crystal excites only particular plasmonic modes in select bands. The selection rule is not only frequency/wavevector matching but also symmetry matching, where the symmetry of plasmonic modes originates from the point group symmetry of the lattice. We demonstrate versatile manipulation of light-plasmon coupling behaviors by engineering the symmetry of the graphene plasmonic crystal.