1. Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan
2. Advanced Optoelectronic Technology Center (AOTC), National Cheng Kung University, Tainan 70101, Taiwan
3. Taiwan Consortium of Emergent Crystalline Materials (TCECM), Ministry of Science and Technology, Taipei 10622, Taiwan
4. National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
5. School of Electronic Science and Applied Physics, HeFei University of Technology, Anhui, China