Finite size effects in surface states of stepped Cu nanostripes

J. E. Ortega,1,2 M. Ruiz-Oses,1 and J. Kuntze3 1Departemento Fisica Aplicada I, Universidad del Pais Vasco, Plaza Onate 2, E-20018 San Sebastian, Spain 2Centro Mixto CSIC/UPV and DIPC, Manuel Lardizabal 4, 20018-San Sebastian, Spain 3Institut fur Experimentelle und Angewandte Physik, Olshausenstrasse 40, D-24098 Kiel, Germany Received 13 July 2005; revised manuscript received 26 September 2005; published 16 November 2005