Affiliation: | a Theoretical Physics III, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, Augsburg 86135, Germany b Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, CZ-162 53 Prague 6, Czech Republic c CREST, JST, Hongo, Tokyo 113-8656, Japan d Department of Applied Physics, University of Tokyo, Hongo, Tokyo 113-8656, Japan e Institute for Solid State Physics, Vienna University of Technology, Vienna, Austria f Department of Physics, Kyoto University, Kyoto 606-8502, Japan |