Global phase diagram of a spin–orbit-coupled Kondo lattice model on the honeycomb lattice
Li Xin1, 2, Yu Rong3, †, Si Qimiao4
       

(a), (b) Definition of nearest neighboring and next nearest neighboring valence bond mean fields Qij. Filled and empty circles denote the two sublattices A and B, respectively. Different bond directions are labeled by different colors. (c) First Brilluion zone corresponds to the two-sublattice unit cell.