Fig. 8: Topological phase diagram and related properties in the interacting region.
From: Reentrant topological phases and spin density wave induced by 1D moiré potentials
a and b Many-body Berry phase γ in units of π plotted in the mo-V plane with U = 0 (a) and in the mo-U plane with V = 0 (b). c Excitation gap Δg under the OBC and γ as functions of mo for U = 0.1. d Distribution of two zero-energy excitation modes near half filling δNf for U = 0.1 and mo = 1.7. Other parameters are ts = 0.95, mz = 2.4, A = 2 for γ, and A = 8 for others.
