1. Department of Physics, Yonsei University, Seoul 03722, Republic of Korea
2. Van der Waals Materials Research Center, Yonsei University, Seoul 03722, Republic of Korea
3. Center for Correlated Electron System, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
4. Department of Physics and Astronomy, Seoul National University (SNU), Seoul 08826, Republic of Korea
5. Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea