1. Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
2. Geophysical Laboratory, Carnegie Institution of Washington, Washington, D.C. 20015, United States
3. Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
4. Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin 150025, China