Plasmonics

, Volume 7, Issue 2, pp 369–376

Quadratic Dispersion and Damping Processes of π Plasmon in Monolayer Graphene on Pt(111)

  • Antonio Politano
  • Antonio Raimondo Marino
  • Vincenzo Formoso
  • Daniel Farías
  • Rodolfo Miranda
  • Gennaro Chiarello
Article

DOI: 10.1007/s11468-011-9317-1

Cite this article as:
Politano, A., Marino, A.R., Formoso, V. et al. Plasmonics (2012) 7: 369. doi:10.1007/s11468-011-9317-1

Abstract

High-resolution electron energy-loss spectroscopy has been used to study the π plasmon in monolayer graphene grown on Pt(111). A quadratic dispersion has been observed, in contrast to the linear dispersion reported for monolayer graphene grown on SiC(0001) and in agreement with recent experiments on graphene/Ni(111). Despite the weak interaction of the monolayer graphene with the Pt(111) surface, our results indicate that the screening by the underlying metal substrate strongly influences both the dispersion relation and the damping processes of the plasmon mode of π electrons.

PACS numbers

68.65.Pq 73.20.Mf 79.20.Uv 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Antonio Politano
    • 1
    • 6
  • Antonio Raimondo Marino
    • 2
  • Vincenzo Formoso
    • 2
    • 3
  • Daniel Farías
    • 1
    • 4
  • Rodolfo Miranda
    • 1
    • 4
    • 5
  • Gennaro Chiarello
    • 2
    • 3
  1. 1.Departamento de FísicaUniversidad Autónoma de Madrid, Campus Universitario de CantoblancoMadridSpain
  2. 2.Dipartimento di FisicaUniversità degli Studi della CalabriaRendeItaly
  3. 3.Consorzio Nazionale Interuniversitario di Scienze Fisiche della MateriaRomeItaly
  4. 4.Instituto de Ciencia de Materiales “Nicolás Cabrera”Universidad Autónoma de MadridMadridSpain
  5. 5.Instituto Madrileño de Estudios Avanzados (IMDEA) en NanocienciaMadridSpain
  6. 6.Dipartimento di FisicaUniversità degli Studi della CalabriaRendeItaly

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