1. Division of Physical Sciences, College of Letters and Science, University of California, Los Angeles, Los Angeles, California 90095, United States
2. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, New York 11973, United States
4. MIT.nano, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
5. Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
6. Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague 6 166 28, Czech Republic
7. Center for Correlated Matter and School of Physics, Zhejiang University, Hangzhou 310058, People’s Republic of China
8. Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments (MFree), Shanghai Advanced Research in Physical Sciences (SHARPS), Pudong, Shanghai 201203, People’s Republic of China
9. Electrical and Computer Engineering Department, University of California, Los Angeles, Los Angeles, California 90095, United States