title: Localized molecular constraint on electron delocalization in a metallic chain.
abstract: An artificial quantum structure consisting of a single CO molecule adsorbed on a Au chain was assembled by manipulating single Au atoms on NiAl(110) at 12 K with a scanning tunneling microscope (STM). The CO disrupts the delocalization of electron density waves in the chain, as it suppresses the coupling between neighboring chain atoms. The possibility to specify the CO position on the chain allows controlled modification of the electronic properties in a quantum system. Inelastic electron tunneling spectroscopy with the STM provides vibrational characterization of the adsorbed CO.
authors.affiliation: Department of Physics and Astronomy, University of California, Irvine, California 92697-4575, USA.
authors.forename: N
authors.initials: N
authors.lastname: Nilius
authors.forename: T M
authors.initials: TM
authors.lastname: Wallis
authors.forename: W
authors.initials: W
authors.lastname: Ho