1. School of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150001, People’s Republic of China
2. School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, People’s Republic of China
3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, People’s Republic of China