Plasmon losses due to electron-phonon scattering: The case of graphene encapsulated in hexagonal boron nitride (Articolo in rivista)

Type
Label
  • Plasmon losses due to electron-phonon scattering: The case of graphene encapsulated in hexagonal boron nitride (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.90.165408 (literal)
Alternative label
  • Principi A.; Carrega M.; Lundeberg M.B.; Woessner A.; Koppens F.H.L.; Vignale G.; Polini M. (2014)
    Plasmon losses due to electron-phonon scattering: The case of graphene encapsulated in hexagonal boron nitride
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Principi A.; Carrega M.; Lundeberg M.B.; Woessner A.; Koppens F.H.L.; Vignale G.; Polini M. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84908022961&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 90 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 16 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Physics and Astronomy, University of Missouri, Columbia, MO, 65211, United States; NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, I-56126, Italy; SPIN-CNR, Via Dodecaneso 33, Genova, I-16146, Italy; ICFO-Institut de Ciències Fotòniques, Mediterranean Technology Park, Castelldefels, Barcelona, E-08860, Spain; Istituto Italiano di Tecnologia, Graphene Labs, Via Morego 30, Genova, I-16163, Italy (literal)
Titolo
  • Plasmon losses due to electron-phonon scattering: The case of graphene encapsulated in hexagonal boron nitride (literal)
Abstract
  • Graphene sheets encapsulated between hexagonal boron nitride (hBN) slabs display superb electronic properties due to very limited scattering from extrinsic disorder sources such as Coulomb impurities and corrugations. Such samples are therefore expected to be ideal platforms for highly tunable low-loss plasmonics in a wide spectral range. In this article we present a theory of collective electron density oscillations in a graphene sheet encapsulated between two hBN semi-infinite slabs (hBN/G/hBN). Graphene plasmons hybridize with hBN optical phonons forming hybrid plasmon-phonon modes. We focus on scattering of these modes against graphene's acoustic phonons and hBN optical phonons, two sources of scattering that are expected to play a key role in hBN/G/hBN stacks. We find that at room temperature the scattering against graphene's acoustic phonons is the dominant limiting factor for hBN/G/hBN stacks, yielding theoretical inverse damping ratios of hybrid plasmon-phonon modes of the order of 50-60, with a weak dependence on carrier density and a strong dependence on illumination frequency. We confirm that the plasmon lifetime is not directly correlated with the mobility: In fact, it can be anticorrelated. (literal)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it