[1] Russian Acad Sci, Kotelnikov Inst Radioengn & Elect, Mokhovaya 11-7, Moscow 125009, Russia
[2] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan
[3] Natl Synchrotron Res Ctr, Hsinchu 300, Taiwan
[4] Jozef Stefan Inst, Jamova 39, SI-1000 Ljubljana, Slovenia
[5] Natl Inst Chem, Dept Mat Chem, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
[6] Acadia Univ, Dept Phys, Wolfville, NS B0P 1X0, Canada
[7] Kazan Fed Univ, Inst Phys, Kazan 420008, Russia
[8] Natl Res Nucl Univ, Moscow Engn Phys Inst MEPhI, Kashirskoe Sh 31, Moscow 115409, Russia
[9] Natl Res Univ Elect Technol MIET, Moscow 124498, Russia
[10] Ural Fed Univ, Mira 19, Ekaterinburg 620002, Russia
[11] Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China