1. Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd., Bldg. 6, Pudong, Shanghai 201203, People’s Republic of China
2. Centre for Science at Extreme Conditions, The University of Edinburgh, King’s Buildings, Edinburgh, United Kingdom
3. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China