1. Department of Physics, Saint Petersburg State University, 198504 St. Petersburg, Russia
2. Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
3. Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
4. Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630559 Kol’tsovo, Russia
5. Donostia International Physics Center, 20018 Donostia-San Sebastián, Spain