1. Laboratory of New Inorganic Materials; Ioffe Institute; 26 Politekhnicheskaya St. St. Petersburg 194021 Russia
2. Department of Nanophotonics and Metamaterials; ITMO University; 49 Kronverksky Pr. St. Petersburg 197101 Russia
3. Institut Jean Lamour, UMR CNRS 7198; Université de Lorraine; Campus Artem, 2 allée André Guinier Nancy 54000 France