1. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
2. Department of Material Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
3. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
4. Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
5. John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
6. Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
7. Department of Physics, Miami University, Oxford, Ohio 45056, United States
8. Department of Physics, University of Wisconsin at Madison, Madison, Wisconsin 53706, United States
9. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
10. Condensed Matter Physics and Material Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
11. College of Engineering and Applied Sciences, Nanjing University, Nanjing, China
12. Materials Department, University of California, Santa Barbara, Santa Barbara, California 93106, United States
13. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
14. Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States