1. Department of Earth and Planetary Sciences, Stanford University, Stanford, CA, 94305, USA
2. Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
3. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
4. SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
5. Department of Physics, University of Florida, Gainesville, FL, 32611, USA