Magnetization-induced symmetry breaking at the surface of ferromagnetic Ni(111) M. Mulazzi, M. Hochstasser, J. Fujii, I. Vobornik, G. Rossi and J. Henk EPL, 82 5 (2008) 57001 Published online: 19 May 2008 DOI: 10.1209/0295-5075/82/57001