Scanning tunneling spectroscopy of rare-earth metals: Gadolinium on yttrium T. Trappmann, M. Gajdzik, C. Sürgers and H.v. Löhneysen Europhys. Lett., 39 2 (1997) 159-164 Published online: 01 September 2002 DOI: 10.1209/epl/i1997-00329-2