1. Hefei National Laboratory for Physical Sciences at Microscale; Department of Materials Science and Engineering; University of Science and Technology of China; Hefei AH 230026 P. R. China
2. School of Life Sciences; University of Science and Technology of China; Hefei AH 230026 P. R. China
3. High Magnetic Field Laboratory; Hefei Institutes of Physical Science; Chinese Academy of Sciences; The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions; Hefei AH 230031 P. R. China
4. Department of Radiology; First Affiliated Hospital of Anhui Medical University; Hefei AH 230022 P. R. China