1. School of Foundational Education, University of Health and Rehabilitation Sciences, Qingdao 266114, China
2. Qingdao Institute for Theoretical and Computational Sciences, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, P. R. China
3. Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, P. R. China
4. School of Physics and State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100, China
5. Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
6. Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
7. Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States