1. Department of Physics, Harbin Institute of Technology, Harbin 15000, China
2. Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom
3. Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, London WC1H 0AJ, United Kingdom
4. Scientific Computing Department, Daresbury Laboratory, STFC, Daresbury, Warrington WA4 4AD, United Kingdom
5. Department of Materials Science and Engineering, Yonsei University, Seoul 03722, South Korea