Wu Ya-Jie, Li Ning, He Jing, Kou Su-Peng
School of Science, Xi'an Technological University, Xi'an 710032, People's Republic of China.
J Phys Condens Matter. 2017 Nov 22;29(46):465601. doi: 10.1088/1361-648X/aa8c65.
In this paper, we present a study on the repulsive Haldane-Hubbard model with spin-rotation symmetry in square lattices by deriving non-linear σ model for magnetic states. It is found that a chiral spin liquid state as the ground state of the correlated system exists in the [Formula: see text] topological spin-density wave proposed by Wu et al (2016 J. Phys.: Condens. Matter 28 115602), of which the low energy physics can be determined by the Chern-Simons-Hopf gauge field theory.
