1. School of Materials Science and Engineering, Jiangsu University, 212013 Zhenjiang, China
2. Material Systems for Nanoelectronics, Technische Universität Chemnitz, 09107 Chemnitz, Germany
3. Research Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Technische Universität Chemnitz, Rosenbergstr. 6, 09126 Chemnitz, Germany
4. Synergetic Innovation Center for Quantum Effects and Applications, School of Physics and Electronics, Hunan Normal University, 410081 Changsha, China