1. College of Physical Science and Technology, Sichuan University, Chengdu 610065, PR China
2. Key Laboratory of High Energy Density Physics and Technology of Ministry of Education, Sichuan University, Chengdu 610065, PR China
3. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
4. Research Center for Computational Design of Advanced Functional Materials, National Institute of Advanced Industrial Science & Technology (AIST), Central 2, 1-1-1 Umezono, Tsukuba 305-8568, Japan