Tuning the surface state dimensionality of Cu nanostripes

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...

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Bibliographic Details
Published inPhysical review letters Vol. 93; no. 13; p. 137602
Main Authors Lobo, J, Michel, E G, Bachmann, A R, Speller, S, Kuntze, J, Ortega, J E
Format Journal Article
LanguageEnglish
Published United States 24.09.2004
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Summary: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.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.93.137602