Tuning the Surface State Dimensionality of Cu Nanostripes

J. Lobo, E. G. Michel, A. R. Bachmann, S. Speller, J. Kuntze, and J. E. Ortega

Phys. Rev. Lett. 93, 137602 – Published 24 September 2004

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 Å, thereby tracking the transition from step-lattice, quasi-two-dimensional umklapp bands to terrace-confined one-dimensional quantum well states.

Received 25 February 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.137602

Authors & Affiliations

J. Lobo¹, E. G. Michel¹, A. R. Bachmann², S. Speller², J. Kuntze³, and J. E. Ortega^4,5

¹Departamento de Física de la Materia Condensada and Instituto Universitario de Ciencia de Materiales “Nicolás Cabrera,” Universidad Autónoma de Madrid, 28049 Madrid, Spain
²Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, 6525 ed Nijmegen, The Netherlands
³Institut für Experimentelle und Angewandte Physik, Olshausenstrasse 40, D-24098 Kiel, Germany
⁴Universidad del País Vasco, Departamento Física Aplicada I, Plaza Oñate 2, E-20018 San Sebastián, Spain
⁵Centro Mixto CSIC/UPV and DIPC, Manuel Lardizabal 4, 20018-San Sebastian, Spain

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Vol. 93, Iss. 13 — 24 September 2004

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