1. Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
2. Faculty of Mathematics and Natural Sciences, School of Exact Sciences, Cardinal Stefan Wyszynski University, Dewajtis 5, 01-815 Warsaw, Poland
3. Institute of High Pressure Physics, Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland
4. Ioffe Physical-Technical Institute, RAS, Politekhnicheskaya 26, St. Petersburg 194021, Russia
5. Institute of Solid State Physics, University of Latvia, 8 Kengaraga, LV-1063 Riga, Latvia
6. National University of Science and Technology “MISiS,” Leninsky Prospekt 4, 119049 Moscow, Russia
7. MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden