Fig. 5
From: High field charge order across the phase diagram of YBa2Cu3Oy
Phase diagram of charge order in YBCO. Temperature-doping phase diagram of charge orders in YBCO. X-Ray diffraction16 (down green triangles) and Resonant X-Ray scattering15 (up green triangles) give the onset temperature of 2D charge order in zero field. The onset temperature of 3D charge order in high fields is given by NMR2,18 (blue squares) and sound velocity (red circles). Sound velocity data at p = 0.108 were obtained in ref. 22 A comparison is made with T 0 (black diamonds) the temperature of the sign change of the Hall effect, a signature of an electron pocket in the reconstructed Fermi surface.24,25 For p > 0.11, the Fermi surface reconstruction takes place at higher temperature than the onset of 3D CDW. Solid black line is the pseudogap temperature T* in YBCO determined from the resistivity curvature map50 Dashed black line is a guide to the eye that extrapolates to the critical point of the pseudogap p* = 0.19 (ref. 38), that is distinct from the critical point of the CDW
