title: Metal-molecule interface fluctuations.
abstract: We have created self-assembled circular chains of C60 laterally bound to a layer of Ag atoms as a model system for characterizing fluctuations at a metal-molecule interface. STM measurements show that the Ag and C60 sides of the interface fluctuate independently, with frequency-dependent amplitudes of magnitude 0.1 nm at approximately 1 Hz for the Ag edge and approximately 0.01 Hz for the C60 ring. The measured frequency spectra of the metal and molecule fluctuation amplitudes will contribute characteristic signatures to transport measurements involving such interfaces.
authors.affiliation: NSF Materials Research Science and Engineering Center and Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA.
authors.forename: Chenggang
authors.initials: C
authors.lastname: Tao
authors.forename: T J
authors.initials: TJ
authors.lastname: Stasevich
authors.forename: William G
authors.initials: WG
authors.lastname: Cullen
authors.forename: T L
authors.initials: TL
authors.lastname: Einstein
authors.forename: Ellen D
authors.initials: ED
authors.lastname: Williams
mesh_terms: D003198:Computer Simulation; D037741:Fullerenes / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D037741:Fullerenes; D046911:Macromolecular Substances; D012834:Silver; C069837:fullerene C60