1. Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
2. Quantum Materials Science Unit, Okinawa Institute of Science and Technology, Okinawa 904-0495, Japan
3. Institute of Physics, Academia Sinica, Taipei 115201, Taiwan
4. Physics Division, National Center for Theoretical Sciences, Taipei 10617, Taiwan
5. Center for Theoretical and Computational Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
6. Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan