1. Department of Electronics, Graduate School of Engineering, Nagoya University, Aichi 464-8603, Japan
2. Institute of Materials and Systems for Sustainability, Nagoya University, Aichi 464-8601, Japan
3. Institute for Semiconductor & Electronics Technology, ULVAC, Inc., Chigasaki, Kanagawa 253-8543, Japan
4. Toyota Central R&D Labs., Inc., Nagakute, Aichi 480-1192, Japan
5. Institute of High Pressure Physics Polish Academy of Sciences, Sokolowska 29/37, 01-142 Warsaw, Poland