Symmetry Engineering of Graphene Plasmonic Crystals.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Nano letters
دوره 15 8 شماره
صفحات -
تاریخ انتشار 2015