1. Department of Materials Science and Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
2. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
3. University of Macau, Avenida da Universidade, Taipa, Macau, China
4. Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan