The electronic properties of graphene formed on Ni(111) by chemical vapor deposition and intercalated with Cs atoms have been studied by angle-resolved electron-energy-loss spectroscopy. The dispersion curve of π plasmon, in comparison with the analogous dispersion curve obtained in the absence of intercalated Cs, shows that alkali metal atoms make graphene to be quasi-free, with a much lowered charge transfer, and with the recovery of the π band linearity at Dirac points.

Plasmon dispersion in quasi-freestanding Graphene on Ni(111)

CUPOLILLO, Anna;CAPUTI, Lorenzo
2013-01-01

Abstract

The electronic properties of graphene formed on Ni(111) by chemical vapor deposition and intercalated with Cs atoms have been studied by angle-resolved electron-energy-loss spectroscopy. The dispersion curve of π plasmon, in comparison with the analogous dispersion curve obtained in the absence of intercalated Cs, shows that alkali metal atoms make graphene to be quasi-free, with a much lowered charge transfer, and with the recovery of the π band linearity at Dirac points.
2013
Chemical vapour deposition; Charge transfer states; Graphene
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/134616
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