1. Gubkin Russian State University of Oil and Gas (National Research University), Leninsky avenue 65/1, Moscow119991, Russia
2. KTH Royal Institute of Technology, Lindstedtsvägen 30, Stockholm11428, Sweden
3. Laboratory of Terahertz Spectroscopy, Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny141700, Russia
4. UFR Sciences, Université Paris-Saclay, 15 rue Georges Clemenceau, Orsay cedex91405, France
5. Research Institute of Solid-State Electronics Materials, MIREA − Russian Technological University (RTU MIREA), 78 Vernadsky prospect, Moscow119454, Russia
6. HSE University, 20 Myasnitskaya ulitsa, Moscow101000, Russia
7. Center for Advanced Mesoscience and Nanotechnology, Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny141700, Russia
8. Kapitza Institute for Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, Moscow117339, Russia