Electronic structure and excitations on clean and nanostructured metal surfaces E. V. Chulkov, A. Zugarramurdi, S. S. Tsirkin, X. Zubizarreta, I. A. Nechaev, I. Yu. Sklyadneva and S. V. Eremeev Eur. Phys. J. B, 75 1 (2010) 37-47 Published online: 24 March 2010 DOI: 10.1140/epjb/e2010-00097-2