title: Glutamic acid adsorbed on Ag(110): direct and indirect molecular interactions.
abstract: First-principles calculations are used to rationalize the adsorption geometry and long-range order observed for (s)-glutamic acid rows adsorbed on Ag(110). Hydrogen bonds and van der Waals interactions are found to be important for the direct molecular interaction within the molecular rows. Adsorption induced charge-density waves in the substrate lead to an indirect interaction between the adsorbates, resulting in the formation of long-range order. Remarkably, structural relaxation effects also play a decisive role in the indirect interactions.
authors.affiliation: Lehrstuhl für Theoretische Physik, Universität Paderborn, 33095 Paderborn, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Blankenburg
authors.forename: W G
authors.initials: WG
authors.lastname: Schmidt