1. Department of Information and Communication EngineeringDaegu Gyeongbuk Institute of Science and Technology (DGIST) 333 Techno Jungang‐daero Dalseong‐gun Daegu 42988 Republic of Korea
2. Department of Physics and Institute of Basic ScienceSungkyunkwan University 2066, Seobu‐ro, Jangan‐gu Suwon Gyeonggi‐do 16419 Republic of Korea
3. Department of Chemistry and Department of Energy EngineeringLow‐Dimensional Carbon Materials CenterUlsan National Institute of Science and Technology (UNIST) UNIST‐gil 50 Ulsan 44919 Republic of Korea
4. Quality & Reliability Assurance DepartmentConvergence Technology DivisionKorea Advanced Nano Fab Center (KANC) 109, Gwanggyo‐ro, Yeongtong‐gu Suwon Gyeonggi‐do 16229 Republic of Korea
5. Center for Integrated Nanostructure Physics (CINAP)Institute for Basic Science (IBS) Suwon 16419 Republic of Korea
6. Department of Engineering ScienceUniversity of Oxford Parks Road Oxford OX1 3PJ UK
7. Division of Physics and Semiconductor ScienceDongguk University‐Seoul 30, pildong‐ro 1‐gil Jung‐gu Seoul 04620 Republic of Korea
8. Department of PhysicsSungkyunkwan University 2066, Seobu‐ro, Jangan‐gu Suwon Gyeonggi‐do 16419 Republic of Korea