Author Affiliations

C. W. Luo,¹ H. J. Wang,¹ S. A. Ku,¹ H.-J. Chen,¹ T. T. Yeh,¹ J.-Y. Lin,² K. H. Wu,¹ J. Y. Juang,¹ B. L. Young,¹ T. Kobayashi,^1,3 C.-M. Cheng,⁴ C.-H. Chen,^4,* K.-D. Tsuei,⁴ and F. C. Chou⁵

¹Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan

²Institute of Physics, National Chiao Tung University, Hsinchu, Taiwan

³Advanced Ultrafast Laser Research Center, and Department of Engineering Science, Faculty of Informatics and Engineering, University of Electro-Communications, 1-5 1 Chofugaoka, Chofu, Tokyo 182-8585, Japan

⁴National Synchrotron Radiation Research Center, Hsinchu, Taiwan

⁵Center for Condensed Matter Sciences, National Taiwan University, Taipei 106 Taiwan

^*Corresponding author: yahahaha0723.cv96@nctu.edu.tw