1. Department
of Applied Physics and the MOE Key Laboratory for Nonequilibrium Synthesis
and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
2. Beijing Computational Science Research Center, Beijing 100094, China
3. Department
of Physics, Key Laboratory of Computational Physical Science (Ministry
of Education), State Key Laboratory of Surface Physics, Collaborative
Innovation Center of Advanced Microstructures, Fudan University, Shanghai 200241, China
4. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China