Fig. 7: Finite size effects in the valley Hall response.
From: Quantized valley Hall response from local bulk density variations
a, b Valley Hall response obtained from Eq. (13) as a function of the flux per plaquette ατ and the size of the bulk Lbulk in a system of size Lx = 450.5a. The chemical potential has been fixed to μ1 = 0.02 t in the first and μ2 = 0.068 t in the second gap, respectively. The colorbar shows the deviation of the valley Hall response with respect to its analytically expected value. The solid black lines represent the magnitude of the magnetic length ℓB for each strain intensity. c, d Projected density of states ρbulk(μF) as a function of ατ and Lbulk at the corresponding chemical potentials μF = μ1 and μF = μ2.
