1. Institute of PhysicsChinese Academy of Sciences Beijing 100190 China
2. School of Physical SciencesUniversity of Chinese Academy of Sciences Beijing 100049 China
3. Songshan Lake Materials Laboratory Dongguan Guangdong 523808 China
4. School of Chemistry and Chemical EngineeringSouthwest Petroleum University Chengdu 610500 China
5. Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 China
6. Beijing Advanced Innovation Center for Materials Genome EngineeringUniversity of Science and Technology Beijing Beijing 100083 China