1. Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul 03760, Republic of Korea
2. Ewha Womans University, Seoul 03760, Republic of Korea
3. Spin-X Institute, School of Microelectronics, South China University of Technology, Guangzhou 511442, People’s Republic of China
4. Universités Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies, 91120 Palaiseau, France
5. Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea