title: Thermal stability of corrugated epitaxial graphene grown on Re(0001).
abstract: We report on a novel approach to determine the relationship between the corrugation and the thermal stability of epitaxial graphene grown on a strongly interacting substrate. According to our density functional theory calculations, the C single layer grown on Re(0001) is strongly corrugated, with a buckling of 1.6 Å, yielding a simulated C 1s core level spectrum which is in excellent agreement with the experimental one. We found that corrugation is closely knit with the thermal stability of the C network: C-C bond breaking is favored in the strongly buckled regions of the moiré cell, though it requires the presence of diffusing graphene layer vacancies.
authors.affiliation: Physics Department and CENMAT, University of Trieste, Via Valerio 2, I-34127 Trieste, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Miniussi
authors.forename: M
authors.initials: M
authors.lastname: Pozzo
authors.forename: A
authors.initials: A
authors.lastname: Baraldi
authors.forename: E
authors.initials: E
authors.lastname: Vesselli
authors.forename: R R
authors.initials: RR
authors.lastname: Zhan
authors.forename: G
authors.initials: G
authors.lastname: Comelli
authors.forename: T O
authors.initials: TO
authors.lastname: Menteş
authors.forename: M A
authors.initials: MA
authors.lastname: Niño
authors.forename: A
authors.initials: A
authors.lastname: Locatelli
authors.forename: S
authors.initials: S
authors.lastname: Lizzit
authors.forename: D
authors.initials: D
authors.lastname: Alfè