1. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, 30332, United States
2. School of Physics, Georgia Institute of Technology, Atlanta, Georgia, 30332, United States
3. Department of Chemistry, University of Houston, Houston, Texas 77204, United States
4. Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, Milan 20133, Italy
5. Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, United States
6. Department of Physics, Wake Forest University, Winston–Salem, North Carolina 27587, United States
7. Center for Functional Materials, Wake Forest University, Winston–Salem, North Carolina 27109, United States
8. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, United States