1. International Center for Young Scientists National Institute for Materials Science 1‐2‐1 Sengen Tsukuba 305‐0047 Japan
2. Department of Applied Physics Tohoku University Sendai 980‐8579 Japan
3. National Institute of Technology Fukushima College Iwaki 970‐8034 Japan
4. Institute for Materials Research Tohoku University Sendai 980‐8577 Japan
5. Center for Spintronics Research Network Tohoku University Sendai 980‐8577 Japan
6. Research Center for Magnetic and Spintronic Materials National Institute for Materials Science (NIMS) Tsukuba 305‐0047 Japan
7. Center for Science and Innovation in Spintronics Core Research Cluster Tohoku University Sendai 980‐8577 Japan
8. JST PRESTO Kawaguchi 332‐0012 Japan