Affiliation: | 1.Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia ;2.Siberian State University of Telecommunications and Information Science, 630102, Novosibirsk, Russia ;3.Novosibirsk State University, 630090, Novosibirsk, Russia ;4.Institut für Festkörperphysik, Technische Universität Berlin, 10623, Berlin, Germany ; |