1. Department of Applied Physics, Osaka University, Osaka 565-0871, Japan
2. Center for Spintronics Research Network, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan
3. Department of Nanomaterials Science, Chiba University, Chiba 263-8522, Japan
4. Department of Materials Science and Molecular Chirality Research Center, Chiba University, Chiba 263-8522, Japan
5. Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, Trieste I-34149, Italy
6. Experimentelle Physik VII and Röntgen Research Center for Complex Materials, Universität Würzburg, Am Hubland, Würzburg D-97074, Germany
7. Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
8. Synchrotron Light Application Center, Saga University, Saga 840-8502, Japan
9. UVSOR Synchrotron Facility, Institute for Molecular Science, Okazaki 444-8585, Japan
10. Synchrotron SOLEIL, L’Orme des Merisiers, Saint Aubin-BP 48, Gif sur Yvette Cedex 91192, France
11. Materials Science Institute of Madrid (ICMM), Spanish Scientific Research Council (CSIC), and the CSIC Associated Unit “MATINÉE”, between the Institute of Materials Science of the Valencia University (ICMUV) and the ICMM, Cantoblanco, Madrid E-28049, Spain