1. Department of Physics, National Taiwan University, Taipei 10617, Taiwan
2. Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
3. A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation, Yerevan 375036, Armenia
4. National Center for Theoretical Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
5. Business School, University of Shanghai for Science and Technology, Shanghai 200093, China