[1] Univ Aix Marseille, Ctr Interdisciplinaire Nanosci Marseille CINaM, CNRS, UPR 3118, F-13288 Marseille 9, France
[2] Belarusian State Univ Informat & Radioelect, Minsk 220013, BELARUS
[3] DSM IRAMIS SPCSI, Commissariat Energie Atom, F-91191 Gif Sur Yvette, France
[4] Univ Cergy Pontoise, LAMAp, F-95000 Cergy Pontoise, France