Affiliation: | (1) Institute of Physics, Acad. Sci. CR, Cukrovarnická 10, 162 00 Praha 6, Czech Republic;(2) Fritz-Haber-Institut der MPG, Faradayweg 4–6, D-14195 Berlin, Germany;(3) Present address: ITALTBS SpA, Via del Follatoio, I-34100 Trieste, Italy;(4) Present address: Institute of Physics, Acad. Sci. CR, Cukrovarnická 10, 162 00 Praha 6, Czech Republic |