1. Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
2. Laboratory for Neutron and Muon Instrumentation, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
3. Department of Engineering and Applied Sciences, Sophia University, Tokyo 102-8554, Japan
4. Physik-Institut, Universität Zürich, CH-8057 Zürich, Switzerland
5. Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
6. Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Pudong, 201210 Shanghai, China
7. Deutsches Elektronen-Synchrotron, 22607 Hamburg, Germany
8. Condensed Matter Theory Group, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
9. Institut de Physique, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
10. Laboratorium für Festkörperphysik, ETH Zürich, CH-8093 Zürich, Switzerland
11. Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
12. School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
13. Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, NY 11973
14. Institute for Solid State and Materials Physics, Technische Universitat Dresden, D-01069 Dresden, Germany