National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University 130023;
Laboratory of Semiconductor Materials Science, Institute of Semiconductors,Chinese Academy of Sciences, Beijing 100083;
National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University 130023;
National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University 130023;
National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University 130023;
National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University 130023;
Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039;
National Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University 130023;