1. School of Physics and Electronic Engineering, Northeast Petroleum University, Daqing 163318, P. R. China
2. Institute of Unconventional Oil and Gas, Northeast Petroleum University, Daqing 163318, China
3. Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China
4. Department of Physics, Department of Materials Science and Engineering, Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China