1. School of Software Engineering, Jiangxi University of Science and Technology, Nanchang 330013, P. R. China
2. School of Energy and Mechanical Engineering, Energy Materials Computing Center, Jiangxi University of Science and Technology, Nanchang 330013, P. R. China
3. State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, P. R. China
4. School of Sciences, Shaoyang University, Shaoyang 422001, P. R. China
5. Department of Physics and Key Laboratory for Low-Dimensional Structures and Quantum Manipulation (Ministry of Education), Hunan Normal University, Changsha 410081, P. R. China
6. School of Computer Science, Jiangxi University of Chinese Medicine, Nanchang 330004, P. R. China