1. Center for Crystal Research
and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2. Key Laboratory of Functional
Crystals and Laser Technology, Technical Institute of Physics and
Chemistry, Chinese Academy of Sciences,
Beijing 100190, China
3. Graduate University of the Chinese Academy of Sciences, Beijing 100049,
China
4. Beijing National
Laboratory
for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
5. School of Science, Beijing University of Post and Telecommunication, Beijing
100876, China