1. School of ScienceChongqing University of Posts and Telecommunications Chongqing 400065 China
2. Key Laboratory of Materials Modification by LaserIon and Electron Beams (Dalian University of Technology)Ministry of Education Dalian 116024 China
3. Institute of PhysicsChinese Academy of Sciences Beijing 100190 China
4. Institute of High Performance ComputingA*STAR Singapore 138632 Singapore