1. Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
2. Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
3. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
4. Materials Physics and Application, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
5. Univ Rennes, INSA Rennes, CNRS, Institut
FOTON - UMR 6082, F-35000 Rennes, France
6. Physical Chemistry and Applied Spectroscopy Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
7. Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77006, United States
8. Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France