1. Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200438, China
2. Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
3. Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Troitsk 108840, Russia
4. FSRC Crystallography and Photonics of Russian Academy of Sciences, Moscow 119333, Russia
5. REC Functional Nanomaterials, Immanuel Kant Baltic Federal University, Kaliningrad 236041, Russia
6. Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, United States
7. Earth and Planets Laboratory, Carnegie Institution for Science, Washington, District of Columbia 20015, United States
8. School of Physics, Zhejiang University, Hangzhou 310058, China
9. School of Science, Harbin Institute of Technology, Shenzhen 518055, China