Fig. 5: Temperature scales for phase competition.

a–f Peak intensities versus temperature measured at ℓ = 1 ∕ 2 and 1 charge-density-wave modulation vectors versus temperature. a, b Intensity for (2 − δa, 0, 1 ∕ 2) and (0, 4 − δa, 1 ∕ 2) with magnetic fields as indicated. Data in a and zero-field data in b are re-plotted from ref. 9. Non-zero magnetic field data in b is ℓ ~ 0.6 amplitudes obtained from two-Gaussian fits of ℓ-scans. c Diffraction intensities at (0, 4 − δa, 1). d Same data as in c but zoomed on the low-field curves. For visibility, these curves have been given an arbitrary vertical shift – as indicated by the dashed base-lines. e, f Comparisons of ℓ = 1 and 1 ∕ 2 temperature dependencies and with that the associated maximum temperature scales \({T}_{\max }\) for the high- and low- magnetic field regimes respectively. Solid lines are fits to a skewed Gaussian (see text) on a linear background. Vertical bars are the \({T}_{\max }\) temperature scales defined by the maximum of the second derivative of the skewed Gaussian. Error bars are standard deviations due to counting statistics. Source data are provided as a Source Data file.