1. Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan
2. Center for Computational Science, University of Tsukuba, Tsukuba 305-8577, Japan
3. Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan
4. AdvanceSoft Corporation, Tokyo 101-0062, Japan
5. Research Institute for Applied Mechanics, Kyushu University, Fukuoka 816-8580, Japan