1. Department of Physics, Kyung Hee University, Seoul 02447, South Korea
2. Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam
3. Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 44610, South Korea
4. Faculty of Physics and Engineering Physics, University of Science, VNU-HCM, Ho Chi Minh City 700000, Vietnam
5. Center for Converging Humanities, Kyung Hee University, Seoul 02447, South Korea