Institution: | 1. National Institute for Materials Physics , P.O. Box MG-7 Magurele, 077125 Bucharest, Romania cghica@infim.ro;3. National Institute for Materials Physics , P.O. Box MG-7 Magurele, 077125 Bucharest, Romania;4. IMEC , Kapeldreef 75, B-3001 Leuven, Belgium;5. EMAT , University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium;6. University of Oslo , Sem Saelands vei 24, P.O. Box 1048 Blindern, N-0316 Oslo, Norway |