Affiliation: | (1) Fock Research Institute of Physics, St. Petersburg State University, Ul’yanovskaya ul. 1, Petrodvorets, St. Petersburg, 198504, Russia;(2) Perm State University, ul. Bukireva 15, Perm, 614990, Russia;(3) Laboratoire de Cristallographie, CNRS, BP 166, Grenoble, 38042, France |