Single layer graphene has been obtained on Ni (111) by dissociation of ethylene. Angle-resolved electron-energy-loss spectra show a low energy plasmon dispersing up to about 2 eV, resulting from fluctuation of a charge density located around the Fermi energy, due to hybridization between Ni and graphene states. The dispersion is typical of a two-dimensional charge layer, and the calculated Fermi velocity is a factor of ∼ 0.5 lower than in isolated graphene. © 2012 Elsevier B.V. All rights reserved.
Low energy two-dimensional plasmon in epitaxial graphene on Ni (111) / Cupolillo, Anna; Ligato, N; Caputi, Lorenzo. - In: SURFACE SCIENCE. - ISSN 0039-6028. - 608(2013), pp. 88-91.
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Titolo: | Low energy two-dimensional plasmon in epitaxial graphene on Ni (111) |
Autori: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Citazione: | Low energy two-dimensional plasmon in epitaxial graphene on Ni (111) / Cupolillo, Anna; Ligato, N; Caputi, Lorenzo. - In: SURFACE SCIENCE. - ISSN 0039-6028. - 608(2013), pp. 88-91. |
Handle: | http://hdl.handle.net/20.500.11770/135358 |
Appare nelle tipologie: | 1.1 Articolo in rivista |