1. Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
2. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
3. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
4. Bachelor’s Program in Advanced Materials Science, Tamkang University, New Taipei City 25137, Taiwan
5. Department of Physics, Tamkang University, New Taipei City 25137, Taiwan
6. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
7. Canadian Light Source Inc., University of Saskatchewan, Saskatoon S7N 2 V3, Canada