Figure 3: Temperature evolution of BaTi2As2O neutron diffraction pattern.
From: Intra-unit-cell nematic charge order in the titanium-oxypnictide family of superconductors
(a) Comparison of normalized intensities of 300 K (red) and 20 K (blue) data around (200) and (201) reflections in P4/mmm setting. (b) Waterfall plot across the temperature range studied. The 20 K data (blue symbols) are shown with a fit (blue solid line) of the refined Pmmm model. The corresponding difference curve is shown as the green solid line below. The asterisk marks the (200)/(020) reflections of the BaTiO3 impurity phase.
