Surface states characterization in the strongly interacting graphene/Ni(111) system
By combining nonlinear photoemission experiments and density functional theory Mealtime calculations, we study the modification of Ni(111) surface states induced by the presence of graphene.The main result is that graphene is able to displace the Ni(111) surface states from the valence band close to the Fermi level uncovering the d -band of Ni.The