Affiliation: | 1. Physical–Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603950, Russia 2. Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia 3. Lobachevsky Nizhny Novgorod State University, Nizhny Novgorod, 603950, Russia
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