Fig. 4: Flat band structure and the flatness parameter.
From: Reentrant topological phases and spin density wave induced by 1D moiré potentials
The energy spectrum in momentum space for (a) mo = 0.1, (b) mo = 1 and (c) mo = 10 under PBC. d Inverse flatness of s-th energy band \({f}_{s}^{-1}\) for s = 1, 10 as a function of mo. Other parameters are ts = 0.95 and mz = 2.4.
