title: Scanning tunneling spectroscopy of epitaxial graphene nanoisland on Ir(111).
abstract: Scanning tunneling spectroscopy (STS) was used to measure local differential conductance (dI/dV) spectra on nanometer-size graphene islands on an Ir(111) surface. Energy resolved dI/dV maps clearly show a spatial modulation, which we ascribe to a modulated local density of states due to quantum confinement. STS near graphene edges indicates a position dependence of the dI/dV signals, which suggests a reduced density of states near the edges of graphene islands on Ir(111).
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, Halle, 06120, Germany. phark@mpi-halle.mpg.de.
authors.forename: Soo-Hyon
authors.initials: SH
authors.lastname: Phark
authors.forename: Jérôme
authors.initials: J
authors.lastname: Borme
authors.forename: Augusto León
authors.initials: AL
authors.lastname: Vanegas
authors.forename: Marco
authors.initials: M
authors.lastname: Corbetta
authors.forename: Dirk
authors.initials: D
authors.lastname: Sander
authors.forename: Jürgen
authors.initials: J
authors.lastname: Kirschner