Fig. 3: Evolution of CDW transition under uniaxial and biaxial stress through resistivity measurements.
a \({\tilde{\rho }}_{aa}\) and b \({\tilde{\rho }}_{cc}\) resistivity curves obtained along a and c, respectively for uniaxial measurements, between 250 K and 375 K, as a function of a/c, varied between 0.993 and 1.004 in Sample 1. c Anisotropy ρaa/ρcc in the same temperature range, obtained from the curves shown in a and b. Inset: zoom on the anisotropy curves. The dots indicate the position of Tc extracted from each anisotropy curve. d \({\tilde{\rho }}_{aa}\) and \({\tilde{\rho }}_{cc}\) resistivity curves obtained by equibiaxial deformation in sample 2, as a function of temperature. e Anisotropy curves extracted from the resistivity curves shown in d as a function of temperature. f Evolution of resistivity jumps (green triangles) and Tc (black squares) for equibiaxial deformations, plotted with the same scale as uniaxial data presented in Fig. 4. No change of these parameters take place under equibiaxial deformation. Note that sample 2 behaves exactly as sample 1 under uniaxial stress, with an inversion of \({\tilde{\rho }}_{aa}\) and \({\tilde{\rho }}_{cc}\) for Fa > 0.9 kg (see Supplementary Information).
