1. National Laboratory
of Solid State Microstructures and Jiangsu Key Laboratory for Nanotechnology and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
2. Key Laboratory for Anisotropy and Texture of Materials
(Ministry of Education), Northeastern University, Shenyang, Liaoning 110819, China
3. Center for
Integrated Spintronic Devices, Hangzhou Dianzi University, Hangzhou 310018, China