Figure 3
From: Controlled state transfer in a Heisenberg spin chain by periodic drives
(a) The effective coupling strength (ECS) vs a, given by Eq. (16). (b) The system dynamics driven by triangular wave field with a = 2.9. And other parameters chosen are m1 = 2, m2 = m3 = 0, J2 = 1, ω = 25, Δ = −1.
