Phase diagram of the 2D lattice. (IMAGE)
Caption
The phase diagram features eight distinct topological phases characterized by the triplet (ν0, νπ/2, ν+) , with phase boundaries θx±θy=nπ ( n∈Z). The symbols of blue circle, blue ring, red square, purple downward triangle, and magenta upward triangle denote the parameter sets (θx, θy)=(1.3π,0), (0.6π,0), (0.3π,1.2π), (1.1π,1.6π) and (-1.042π, 1.6π) used in this study.
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