Plasmons in Dimensionally Mismatched Coulomb Coupled Graphene Systems

Research output: Research - peer-reviewJournal article – Annual report year: 2017

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We calculate the plasmon dispersion relation for Coulomb coupled metallic armchair graphene nanoribbons and doped monolayer graphene. The crossing of the plasmon curves, which occurs for uncoupled 1D and 2D systems, is split by the interlayer Coulomb coupling into a lower and an upper plasmon branch. The upper branch exhibits an unusual behavior with end points at finite q. Accordingly, the structure factor shows either a single or a double peak behavior, depending on the plasmon wavelength. The new plasmon structure is relevant to recent experiments, its properties can be controlled by varying the system parameters and be used in plasmonic applications.
Original languageEnglish
Article number126801
JournalPhysical Review Letters
Volume119
Issue number12
Number of pages6
ISSN0031-9007
DOIs
StatePublished - 2017
CitationsWeb of Science® Times Cited: 0
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