Affiliation: | (1) Department of Computer Sciences, University of Sheffield, Regent Court, 211 Portobello Road, Sheffield, S1 4DP, UK;(2) Institut des Matériaux Jean Rouxel, CNRS-Université de Nantes, UMR6502, B.P. 32229, 2 rue de la Houssinière, 44322 Nantes, France;(3) Laboratoire de Physiques des Solides, Université Paris Sud, batiment 510, 91405 Orsay, France |