Fig. 2: The pre-peak of the diffraction intensity I(Q) in the logarithmic scale. | Nature Communications

Fig. 2: The pre-peak of the diffraction intensity I(Q) in the logarithmic scale.

From: Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe

Fig. 2

a GeSe and b GeTe. The Q-range from 0.4 to 1.8 Å−1 is shown for a clear view of the pre-peaks. The gray dashed lines are the baselines calculated by a linear interpolation62. c The pressure dependence of the integrated intensity of the pre-peak of GeSe (square) and GeTe (rhombus). The open symbols of GeTe above 3.4 GPa indicate that the system contains a partially crystallized state at those pressures. The pre-peak intensity of each sample is normalized to the intensity at the ambient condition, respectively. Error bars were estimated for the selection of data points for linear interpolation, which is significantly larger than the error caused by the fluctuation of I(Q) itself. Red and blue lines are the fitting by a stretched exponential function for the guide of eyes.

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