The graphene/Ni(111) system has been studied by angle-resolved electron-energy-loss spectroscopy. The interface-p plasmon, related to interband transitions involving hybridized states at the K point of the hexagonal Brillouin zone, has been measured at different scattering geometries. The resulting dispersion curve exhibits a square root behavior, indicating the Two-dimensional (2D) character of the interface collective excitation.
Two-dimensional character of the interface-p plasmon in epitaxial graphene on Ni(111)
CUPOLILLO, Anna;CAPUTI, Lorenzo
2012-01-01
Abstract
The graphene/Ni(111) system has been studied by angle-resolved electron-energy-loss spectroscopy. The interface-p plasmon, related to interband transitions involving hybridized states at the K point of the hexagonal Brillouin zone, has been measured at different scattering geometries. The resulting dispersion curve exhibits a square root behavior, indicating the Two-dimensional (2D) character of the interface collective excitation.File in questo prodotto:
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