1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150, Finland
3State Key Laboratory for Mesoscopic Physics, Collaborative Innovation, Center of Quantum Matter, School of Physics, Peking University, Beijing, China
4State Key Laboratory for Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
5School of Physical Sciences, University of Chinese Academy of Science, Beijing 100190, China
6Beijing Key Laboratory for Nanomaterials and Nanodevices, Beijing 100190 China
7QTF Centre of Excellence, Department of Applied Physics, Aalto University, FI-00076 Aalto, Finland
8Songshan-Lake Materials Laboratory, Dongguan, 523808 Guangdong Province China
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