Evolution of a symmetry gap and synergetic quantum well states in ultrathin Ag films on Au(111) substratesLi Huang, X. G. Gong, E. Gergert, F. Forster, A. Bendounan, F. Reinert and Zhenyu ZhangEPL, 78 5 (2007) 57003DOI: https://doi.org/10.1209/0295-5075/78/57003