1. Department of Chemistry, College of Humanities
and Sciences, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
2. Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
3. Center for Emergent Matter Science (CEMS), RIKEN, Wako-shi, Saitama 351-0198, Japan
4. Faculty of Pure and Applied Science, Center
for Integrated Research in Fundamental Science and Engineering (CIRFSE), and Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba, Tsukuba 305-8571, Japan
5. Department of Integrated Sciences in Physics and Biology,
College of Humanities and Sciences, Nihon University, Setagaya-ku, Tokyo 156-8550, Japan
6. Condensed
Matter Theory Group, Paul Scherrer Institut, CH-5232 Villigen
PSI, Switzerland