1 Research Center for Computational Design of Advanced Functional Materials, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan. kazu.takahashi@aist.go.jp.
2 Research Center for Computational Design of Advanced Functional Materials, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
3 Department of Physics, Faculty of Science, Kyushu University, Fukuoka, Fukuoka, Japan.