1. E. L. Ginzton
Laboratory, Stanford University, Stanford, California 94305, United States
2. Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, United States
3. Stanford Institute for Materials and Energy Sciences,
SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
4. Laboratoire des Multimateriaux et Interfaces, Université de Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
5. Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany