Affiliation: | 1. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 142432 Chernogolovka, Moscow District, RUSSIA;2. Moscow Institute of Physics and Technology, 29 Institutskiy per., 141700 Dolgoprudny, Moscow Region, Russia;3. Physics Department, Royal Holloway University of London, Egham, Surrey, TW20 0EX, United Kingdom |