1. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3. CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai 200050, China
4. School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
5. Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany