Two-photon photoemission studies of graphene and topological insulators

Abstract

After an introduction to the systems under study and the applied experimental techniques, the following topics are discussed: · Surface states of metal- and SiC-supported graphene around the Gamma-Point · Charge screening in graphene and charge transfer to the substrate · Unoccupied, energetically high-lying Dirac cones of bismut chalcogenides · Electron dynamics in the surface state of Sb2SnTe4, an intrinsically p-type topological insulator