1. Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH8 8AQ, United Kingdom
2. Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai 201203, People’s Republic of China
3. H.H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, United Kingdom
4. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences (CAS), Hefei, Anhui 230031, People’s Republic of China