1. Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon 34141, Republic of Korea
2. Center for Lattice Defectronics, KAIST, Yuseong-gu, Daejeon 34141, Republic of Korea
3. Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
4. Department of Physics, POSTECH, Pohang 37673, Republic of Korea
5. MPPHC−CPM, Max Planck POSTECH/Korea Research Initiative (MPK), Pohang 37673, Republic of Korea
6. Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
7. Korea Basic Science Institute, Daejeon 34133, Republic of Korea