title: Extraordinary electron propagation length in a metallic double chain supported on a metal surface.
abstract: The present theoretical study shows that a double chain of Cu metal atoms adsorbed on a Cu(111) metal surface can guide an excited electron for distances exceeding 10 nm. The nanostructure appears to be quasi-decoupled from the substrate and thus to act as a nanowire. The origin of the above phenomenon is the interference between the decay of the quasistationary 1D sp-band states localized on each chain. This allows to approach the situation of the formation of bound states in the continuum first discussed in quantum systems by von Neumann and Wigner.
authors.affiliation: CNRS, Laboratoire des Collisions Atomiques et Moléculaires, UMR 8625, Bâtiment 351, Université Paris-Sud, 91405 Orsay Cedex, France.
authors.forename: Sergio
authors.initials: S
authors.lastname: Díaz-Tendero
authors.forename: Andrey G
authors.initials: AG
authors.lastname: Borisov
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Gauyacq