1. Division of Physics and Applied Physics; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link 637371 Singapore Singapore
2. School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue 639798 Singapore Singapore
3. IKERBASQUE-Basque Foundation for Science; 48013 Bilbao Euskadi Spain
4. Donostia International Physics Center (DIPC) & Kimika Fakultatea; Euskal Herriko Unibertsitatea (UPV/EHU); Paseo Manuel Lardiazabal 4 20018 Donostia Euskadi Spain
5. State Key Laboratory of Crystal Materials; Shandong University; Jinan Shandong 250100 P. R. China
6. Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link 637371 Singapore Singapore
7. NOVITAS, Nanoelectronics Center of Excellence; School of Electrical and Electronic Engineering; Nanyang Technological University; 639798 Singapore Singapore
8. MajuLab; CNRS-UNS-NUS-NTU International Joint Research Unit; UMI 3654 Singapore Singapore