Figure 4: Scaling analysis of the critical fields at which the systems become topological.

(a) The critical electric field E_c at which the Floquet Hamiltonian becomes topological decreases exponentially with the linear size of the system, , and approaches E_c=3.47 in the thermodynamic limit. This value is compatible with the value at which the translationally invariant system becomes topological (see b). (b) The equilibrium Chern number of the translationally invariant system jumps discontinuously at =3.485 indicating that, for E>, the translationally invariant system becomes topological. (c) For a fixed system size (N_sites=928), the value of the electric field at which the wavefunction becomes topological decreases exponentially with /T and approaches =5.10 as /T→∞. This value is compatible with the value at which H_F becomes topological for N_sites=928 (see the point indicated by an arrow in a). (d) For fixed ramp time (=80T), critical field at which the wavefunction becomes topological decreases exponentially with L and approaches =5.04 in the thermodynamic limit.