1. State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China
2. Department of Physics and Astronomy California State University Northridge Northridge CA 91330 USA
3. Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan Hubei 430074 China
4. Department of Nuclear Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
5. Division of Nanomaterials and Chemistry Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China