1. Institute
of Physics, Chinese Academy of Sciences, Beijing 100190, China
2. Department
of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37240 United States
3. Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
4. Center
for Interdisciplinary Studies and Key Laboratory for Magnetism and
Magnetic Materials of the MoE, Lanzhou University, Lanzhou 730000, China
5. Beijing Computational Science Research Center, Beijing 100084, China