title: Secondary electron spectra of graphene on Ni(111) surface.
abstract: We report on kinetic energy distributions of electrons emitted during bombardment of graphene adsorbed on a Ni(111) surface by 0.5-0.9 keV electrons. The spectra reveal several peaks superimposed on the background of cascade electrons. The position of these peaks does not depend significantly on primary electron energy but show a remarkable angular dependence, indicating that they are directly related to the empty bands above the vacuum level of the sample.
authors.affiliation: Dipartimento di Fisica, Università della Calabria and INFN-Gruppo collegato di Cosenza-Via P Bucci cubo 33C, Arcavacata di Rende, Cosenza, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Pisarra
authors.forename: A
authors.initials: A
authors.lastname: Cupolillo
authors.forename: L S
authors.initials: LS
authors.lastname: Caputi
authors.forename: A
authors.initials: A
authors.lastname: Sindona
authors.forename: P
authors.initials: P
authors.lastname: Riccardi