title: Electronic structure of spatially aligned graphene nanoribbons on Au(788).
abstract: We report on a bottom-up approach of the selective and precise growth of subnanometer wide straight and chevron-type armchair nanoribbons (GNRs) on a stepped Au(788) surface using different specific molecular precursors. This process creates spatially well-aligned GNRs, as characterized by STM. High-resolution direct and inverse photoemission spectroscopy of occupied and unoccupied states allows the determination of the energetic position and momentum dispersion of electronic states revealing the existence of band gaps of several electron volts for straight 7-armchair, 13-armchair, and chevron-type GNRs in the electronic structure.
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität, Münster, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Linden
authors.forename: D
authors.initials: D
authors.lastname: Zhong
authors.forename: A
authors.initials: A
authors.lastname: Timmer
authors.forename: N
authors.initials: N
authors.lastname: Aghdassi
authors.forename: J H
authors.initials: JH
authors.lastname: Franke
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Feng
authors.forename: K
authors.initials: K
authors.lastname: Müllen
authors.forename: H
authors.initials: H
authors.lastname: Fuchs
authors.forename: L
authors.initials: L
authors.lastname: Chi
authors.forename: H
authors.initials: H
authors.lastname: Zacharias