1. Department of Electrical Engineering, Stanford University, Stanford, California 94305, United States
2. Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
3. Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, United States
4. Department of Applied Physics, Stanford University, Stanford, California 94305, United States
5. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
6. Cyclotron Road, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
7. Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6315, United States
8. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States