Figure 1
From: Topological incommensurate magnetization plateaus in quasi-periodic quantum spin chains

Magnetization curves for quasi-periodic AFM Heisenberg
chains.
Magnetization versus h for systems with λ = 0.8, δ = 0 and different chain lengths under PBC. From left to right, (a)
, (b)
, (c)
. L = 50, 100 and 200 are represented by solid (green), dashed dotted (blue) and dashed (red) lines, respectively. The horizontal dashed (black) lines denote the specific α-dependent values discussed in the main text.