1. State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China
2. Beijing Key Laboratory of Quantum Devices Peking University Beijing 100871 China
3. Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 China
4. Faculty of Physics University of Vienna Boltzmanngasse 5 Vienna A‐1090 Austria
5. Key Laboratory of Spintronics Materials Devices and Systems of Zhejiang Province Hangzhou 311305 China