| Affiliation: | 1. School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore;2. National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan;3. School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore;4. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore;5. Paul‐Drude‐Institut für Festk?rperelektronik Leibniz‐Institut im Forschungsverbund Berlin Hausvogteiplatz 5‐7, Berlin, Germany;6. Department of Physics, National University of Singapore, Singapore;7. Department of Physics, National Tsing Hua University, Hsinchu, Taiwan;8. Institute of Physics, Academia Sinica, Taipei, Taiwan |
