Fig. 4: Temperature quenching of the superlattice structure.
From: Discovery of giant unit-cell super-structure in the infinite-layer nickelate PrNiO2+x
a–c Diffracted intensities within the (h, k, 1.75) scattering plane in terms of reciprocal lattice units (r.l.u.) for temperatures as indicated. d Corresponding h-scans through (h, 1/2, 1/4), demonstrating how the annealing-induced symmetry breaking can be quenched. The quenching experiment was carried out on a PrNiO2 thin film that was kept under vacuum conditions before being introduced into the controlled helium atmosphere in the XRD chamber. The sample was measured in a full cycle of heating and cooling back to room temperature. Error bars reflect counting statistics.
