[1] Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia
[2] Lomonosov Moscow State Univ, Dept Mat Sci, Moscow 119991, Russia
[3] Shenzhen MSU BIT Univ, Dept Mat Sci, Shenzhen 517182, Peoples R China
[4] Lomonosov Moscow State Univ, Dept Phys, Moscow 119991, Russia
[5] Natl Res Univ, Moscow Inst Phys & Technol, Ctr Photon, Lab Terahertz Spect, Dolgoprudnyi 141701, Russia
[6] Natl Univ Sci & Technol MISiS, Dept Phys Mat Sci, Moscow 119049, Russia
[7] Natl Res Ctr Kurchatov Inst, Moscow 119991, Russia