Half-filled Kondo lattice on the honeycomb lattice Yin Zhong, Ke Liu, Yu-Feng Wang, Yong-Qiang Wang and Hong-Gang Luo Eur. Phys. J. B, 86 5 (2013) 195 Published online: 29 April 2013 DOI: 10.1140/epjb/e2013-31091-7