Figure 1From: Superlattices: problems and new opportunities, nanosolids The in-phase, Re 〈 v 〉 1 and out-of-phase Im〈 v 〉 1 components of the linear response function for a superlattice with an applied electric field of F = F 0 + 2 F 1 cos ωt , ω B = eF 0 d/ħ , and ω B1 = eF 1 d/ħ.Back to article page