1. Key
Laboratory of Materials Modification by Laser, Electron, and Ion Beams
(Ministry of Education), School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
2. School
of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China
3. Beijing
Key Laboratory for Magneto-Photoelectrical Composite and Interface
Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
4. Beijing
National Laboratory for Condensed Matter Physics, Beijing Key Laboratory
for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China