Fig. 6: Competing temperature and magnetic field scales.

a Intensity map of (0, 4 – δb, 1) (logarithmic colour scale) as a function of temperature and magnetic field. The open circles indicate the temperature scale \({T}_{\max }^{\ell =1}\) below which suppression of the F-CDW order is observed (Figs. 4a–c). The curved dashed line is a guide to the eye. b Intensity map (linear colour scale) focusing on the high-magnetic-field region. The thin dashed lines indicate contour lines. c \({T}_{\max }\) scales inferred from the ℓ = 1 ∕ 2 (red) and ℓ = 1 (blue) charge-density-wave, respectively. Solid lines are guides to the eye. For the ℓ = 1 ∕ 2 \({T}_{\max }\) temperature scale, triangular and circular data points stem from data recorded along the a- (ref. 9) and b-axis (this work) respectively. As the \({T}_{\max }\) temperature scales indicate the onset of competition with superconductivity, these lines are labelled \({B}_{{\rm{c}}2}^{\ell =1}\) and \({B}_{c2}^{\ell =1/2}\) in the T → 0 limit. Error bars indicate the uncertainty related to the determination of the \({T}_{\max }\) temperature scales. d Correlation lengths \({\xi }_{b}^{\ell =1/2}\) and \({\xi }_{b}^{\ell =1}\) at the respective \({T}_{\max }\) temperature values. Source data are provided as a Source Data file.