Institution: | 1. European Synchrotron Radiation Facility, 71 Avenue des Martyrs, CS40220, F-38043Grenoble Cedex 9, France;2. CNR-SPIN and Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133Milano, Italy;3. Max-Planck-Institut für Festk?rperforschung, Heisenbergstrasse 1, D-70569Stuttgart, Germany |