Affiliation: | 1.Omsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 644024, Omsk, Russia ;2.Omsk State Technical University, 644050, Omsk, Russia ;3.National Research Tomsk Polytechnic University, 634050, Tomsk, Russia ;4.St. Petersburg University, 199034, St. Petersburg, Russia ;5.Institute of Solid State Physics, Dresden University of Technology, 01069, Dresden, Germany ; |