title: Tuning the surface state dimensionality of Cu nanostripes.
abstract: Stepped Cu nanostripes with varying terrace widths are self-assembled during Ag-induced periodic faceting of vicinal Cu(111). By changing Ag coverage the average terrace size within individual Cu stripes is readily tuned, making it possible to select the one-dimensional or two-dimensional character of surface states. Furthermore, the average terrace size can be smoothly switched from 10 to 30 A, thereby tracking the transition from step-lattice, quasi-two-dimensional umklapp bands to terrace-confined one-dimensional quantum well states.
authors.affiliation: Departamento de Física de la Materia Condensada and Instituto Universitario de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Lobo
authors.forename: E G
authors.initials: EG
authors.lastname: Michel
authors.forename: A R
authors.initials: AR
authors.lastname: Bachmann
authors.forename: S
authors.initials: S
authors.lastname: Speller
authors.forename: J
authors.initials: J
authors.lastname: Kuntze
authors.forename: J E
authors.initials: JE
authors.lastname: Ortega