1. Center for Condensed Matter and Materials Physics, Department of Physics, Beihang University, 100191 Beijing, People's Republic of China
2. Univ. Grenoble Alpes, Inst NEEL, F-38000 Grenoble, France
3. CNRS, Inst NEEL, F-38000 Grenoble, France
4. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206, People's Republic of China