1. Diamond Electronics DepartmentTechnological Institute for Superhard and Novel Carbon Materials 7a Tsentralnaya Street, Troitsk 142190 Moscow Russia
2. Moscow Institute of Physics and Technology 9 Institutskiy per., Dolgoprudny 141700 Moscow Region Russia
3. National University of Science and Technology MISiS 4 Leninsky prosp. 119991 Moscow Russia
4. The All-Russian Research Institute for Optical and Physical Measurements 46 Ozernaya Street 119361 Moscow Russia