Affiliation: | 1. National Science Center “Kharkov Institute of Physics and Technology”, 1, Akademicheskaya Str. Kharkov, 61108, Ukraine;2. Kharkov National University 4, Svobody Sq., Kharkov, 61077, Ukraine;3. Kharkov Polytechnic Institute, 21, Frunze St., Kharkov, 61145, Ukraine |