1. Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
2. Laboratory for Quantum Magnetism, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
3. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K.
4. Institut für Festköperphysik, TU Dresden, D-01069 Dresden, Germany
5. Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstr. 1, D-85748 Garching, Germany
6. Condensed Matter Theory Group, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
7. Institut Laue-Langevin, 6 rue Jules Horowitz, 38042 Grenoble, France
8. Laboratory for Developments and Methods, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
9. Max Planck Institut für Festkörperforschung, D-70569 Stuttgart, Germany
10. Physikalisches Institut und Röntgen Center for Complex Materials Systems, Universität Würzburg, 97074 Würzburg, Germany
11. School of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K.