1. Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2. Department of Physics, Tomsk State University, 634050 Tomsk, Russia
3. Center for Nanophase Materials Sciences, and Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States