Figure 3: Diffractive behaviour of the 1D supercooled superlattice.
(a) Sketch of the experimental geometry and (b) detected diffraction efficiency (dots) as a function of temperature in the proximity of ferroelectric transition for different wave polarizations. An anomaly appears crossing TC for H-polarized light signalling the emergence of the super-crystal. Lines are interpolations serving as guidelines. (c) Scheme of the periodically ordered ferroelectric state along the x direction undelying the super-crystal phase for T<TC and giving the spontaneous polarization PS(x) sketched in d.
