1. Department
of Biomedical Information Sciences, Graduate School of
Information Sciences, Hiroshima City University, 3-4-1 Ozuka-Higashi, Asa-Minami-Ku, Hiroshima 731-3194, Japan
2. Division of Chemical
Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
3. Center
for Spintronics Research Network (CSRN), Graduate School
of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan