1. Laboratoire de Physique des
Solides, CNRS-UMR 8502, Université Paris-Sud, F-91405 Orsay, France
2. Laboratoire d’Optique
Appliquée, ENSTA, CNRS, Ecole Polytechnique, 91761 Palaiseau, France
3. School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
4. Department
of Physics, Purdue University, West Lafayette,
Indiana 47907, United
States
5. Synchrotron SOLEIL, Saint-Aubin BP 48, F-91192 Gif-sur-Yvette, France
6. Laboratoire des Solides Irradiés,
Ecole Polytechnique-CEA/DSM-CNRS UMR 7642, F-91128 Palaiseau, France