1. Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
2. Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
3. National Synchrotron Radiation Research Center, Hsinchu 30010, Taiwan
4. Department of Materials Science and Engineering, National Chung Hsing University, Taichung 402, Taiwan
5. Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan
6. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
7. Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
8. School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
9. ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), UNSW Sydney, Sydney 2052, Australia
10. Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan