Incommensurate Quantum Size Oscillations of Oligoacene Wires Adsorbed on Au(111)Click to copy article linkArticle link copied!
- Michiel J. van SettenMichiel J. van SettenNanoscopic Physics, Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348 Louvain-la-Neuve, BelgiumIMEC, Kapeldreef 75, 3001 Leuven, BelgiumMore by Michiel J. van Setten
- Dimitra XeniotiDimitra XeniotiInstitut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 CNRS-UdS, 23, Rue du Loess, BP 43, 67034 Strasbourg, Cedex 2, FranceMore by Dimitra Xenioti
- Mébarek AlouaniMébarek AlouaniInstitut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 CNRS-UdS, 23, Rue du Loess, BP 43, 67034 Strasbourg, Cedex 2, FranceMore by Mébarek Alouani
- Ferdinand EversFerdinand EversInstitut I - Theoretische Physik, Universität Regensburg, Universitätsstraß e 31, 93053 Regensburg, GermanyMore by Ferdinand Evers
- Richard Korytár*Richard Korytár*E-mail: [email protected]Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech RepublicMore by Richard Korytár
Abstract
Acenes have attracted interest for a long time partly because of their electronic structure and partly because they are expected to show interesting correlation effects. For the isolated molecules, our recent theoretical work suggests a possibility for oscillations of the excitation gaps with the length of the molecule. In view of the recent experimental progress of on-surface synthesis, we employ the density functional theory to investigate here the fate of these oscillations for oligoacenes adsorbed on a Au(111) surface. We show that the surface perturbs the oligoacene gaps seen in isolation only weakly, implying that incommensurate oscillations survive. Effects beyond the density functional description (correlations, charging effects) are discussed.
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