1. Lawrence Berkeley National Laboratory National Center for Electron Microscopy Facility, Molecular Foundry, , Berkeley, CA 94720, USA
2. University of California Department of Materials Science and Engineering, , Berkeley, CA 94720, USA
3. University of California Department of Physics, , Berkeley, CA 94720, USA
4. Lawrence Berkeley National Laboratory Materials Sciences Division, , Berkeley, CA 94720, USA
5. Lawrence Berkeley National Laboratory Molecular Foundry, , Berkeley, CA 94720, USA
6. King's College London Theory and Simulation of Condensed Matter, Department of Physics, , The Strand, London WC2R 2LS, UK
7. Humboldt-Universität zu Berlin Department of Physics & IRIS Adlershof, , Newtonstraße 15, 12489 Berlin, Germany
8. School of Physics and Astronomy, Monash University , Clayton, VIC 3800, Australia
9. School of Physics, University of Melbourne , Parkville, VIC 3010, Australia