1. Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, People’s Republic of China
2. State Key Laboratory for Mechanical Behavior of Materials, Center for Spintronics and Quantum Systems, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, People’s Republic of China
3. School of Microelectronics, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
4. Shaanxi & NPU Chongqing Technology Innovation Center, Chongqing 400000, People’s Republic of China