1. Institute
of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
2. Department
of Physics, Nanyang Normal University, Nanyang 473061, China
3. Centre
for Science at Extreme Conditions and SUPA, School of Physics and
Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
4. Beijing Computational
Science Research Center, Beijing 10084, China