© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
I.A. Yakovlev, A.I. Fedorova, T.G. Chernevich, O.A. Shustin
Department of Physics of Crystals, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
Department of Physics of Crystals, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia