1. A.V. Rzhanov Institute of Semiconductor Physics, Siberian Division of the Russian Academy of Sciences, Lavrenteva 13, Novosibirsk 630090, Russia
2. Analytical and Technological Innovation Center “High Technologies and New Materials,” Novosibirsk State University, Pirogova Street, 2, 630090 Novosibirsk, Russia
3. Department of Radiophysics and Computer Science, Belarusian State University, av. Nezavisimosti, 4, 220030 Minsk, Belarus