Effect of interaction and temperature on quantum phase transition in anisotropic square-octagon lattice*
Bao Ana),b)†, Zhang Xue-Fengb), Zhang Xiao-Zhonga)
       
(a) Sketch map of square-octagon lattice and the cluster used in this work. (b) Sketch map of cluster embedded in self-consistent field for square-octagon lattice in cellular dynamical mean-field theory regime. (c) First Brillouin zone of square-octagon lattice with the high symmetry points Γ , M , and K . (d) Tight binding approximation energy dispersion along the line between high symmetric points in the first Brillouin zone of anisotropic square-octagon lattice for λ = 2.0. (e) Tight binding approximation energy dispersion along the line between high symmetric points in the first Brillouin zone of anisotropic square-octagon lattice for λ = 0.5.