1. Department of Applied Physics, Nagoya University, Nagoya 464-8603, Japan
2. Research and Utilization Division, Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
3. Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
4. Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan