1. Institute
of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
2. Department
of Physics, Nanyang Normal University, Nanyang 473061, China
3. Beijing Computational Science Research Center, Beijing 100084, China
4. College
of Physics and Electronic Information, Inner Mongolia University for the Nationalities, Tongliao 028043, China
5. Centre
for Science at Extreme Conditions and SUPA, School of Physics and
Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom