作者机构:[1]Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China, [2]Department of Physics, Bering Key Laboratory of Opto-Electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China, [3]Collaborative Innovation Center of Quantum Matter, Beijing 100190, China, [4]School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
相关基金:Acknowledgments We thank Zhenyu Zhang for useful discussions. We also thank Yunlong Guo for assistance in ARPES measurements. This work was supported by grants from the Ministry of Science and Technology of China (2015CB921000, 2016YFA0401000, 2015CB921301, 2016YFA0300300) and the National Natural Science Foundation of China (11574371, 11274362, 1190020, 11334012, 11274381, 11674371 ).