1. Osaka University,Graduate School of Engineering Science,Department of Systems Innovation,Toyonaka, Osaka,Japan,560-8531
2. Osaka University,Center for Spintronics Research Network, Graduate School of Engineering Science,Toyonaka, Osaka,Japan,560-8531
3. Osaka University,Division of Materials and Manufacturing Science, Graduate School of Engineering,Suita, Osaka,Japan,565-0871