Emergent scale invariance of nonclassical plasmons in graphene nanoribbons

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review



View graph of relations

Using a nearest-neighbor tight-binding model we investigate quantum effects of plasmons on few-nanometer wide graphene nanoribbons, both for zigzag and armchair edge terminations. With insight from the Dirac description we find an emerging scale-invariant behavior that deviates from the classical model both for zigzag and armchair structures. The onset of the deviation can be related to the position of the lowest parabolic band in the band structure. Dirac theory is only valid in the parameter subspace where the scale invariance holds that relates narrow ribbons with high doping to wide ribbons with low doping. We also find that the edge states present in zigzag ribbons give rise to a blue shift of the plasmon, in contrast to earlier findings for graphene nanodisks and nanotriangles.
Original languageEnglish
Article number155412
JournalPhysical Review B
Issue number15
Number of pages10
Publication statusPublished - 2018
CitationsWeb of Science® Times Cited: No match on DOI

Download statistics

No data available

ID: 158590995