supported by the Ministry of Science and Technology of China(Grant No.2016YFA0300504);the National Natural Science Foundation of China(Grant No.11374364);the Fundamental Research Funds for the Central Universities;the Research Funds of Renmin University of China(Grant No.14XNLF08)
The Kitaev model in a honeycomb lattice,which has an exactly solvable spin liquid as the ground state[1],has attracted a lot of research interests.Recently,Kitaev-type interactions were discovered in several quasi-2D,...