Affiliation: | (1) Inst. of Material Physics, University of Vienna, A-1090, Austria;(2) Department of Electrical Measurement and Measurement Signal Processing, Technical University Graz, A-8010 Graz, Austria;(3) Institute of Material Physics, University of Vienna, A-1090, Austria;(4) Department of Electrical Measurement and Measurement Signal Processing, Technical University Graz, A-8010 Graz, Austria |