1. Department of Physics, University of Ulsan, Ulsan 44610, Republic of Korea
2. Department of Physics, Pusan National University, Busan 46241, Republic of Korea
3. Advanced Light Source (ALS), E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. Department of Physics, University of Seoul, Seoul 02504, Republic of Korea
5. Department of Smart Cities, University of Seoul, Seoul 02504, Republic of Korea
6. Electricity and Electronics and Semiconductor Applications, Ulsan College, Ulsan 44610, Republic of Korea