Fig. 2
From: Pseudogap phase of cuprate superconductors confined by Fermi surface topology
Effect of pressure on Nd-LSCO. Transport properties of Nd-LSCO as a function of temperature, at different dopings as indicated. In a, c and d, grey data are in zero field and coloured data are in magnetic field. a Resistivity of Nd-LSCO at p = 0.22 from ref. 5 (blue) and at p = 0.24 from ref. 4 (red), in H = 33 T and ambient pressure. At p = 0.22, ρ(T) is seen to deviate upwards from its linear T dependence at high T (black line) below the onset temperature T* of the pseudogap phase (Fig. 1a). b Difference between the data and the linear fits of Supplementary Fig. 6, showing that the onset of the upturn at T* (arrow) is independent of pressure. The sharp kink is due to the structural transition from orthorhombic at high T (LTO) to tetragonal at low T (LTT) (see Fig. 1). c Resistivity of Nd-LSCO at p = 0.22 and H = 33 T, at ambient pressure (blue, ref. 5) and P = 2.0 GPa (red, this work), with a linear fit (black line) to the P = 2.0 GPa data. d As in c, but for the Hall coefficient R H(T). The horizontal dotted line is the value expected from the large hole-like Fermi surface. Coloured dashed lines are a guide to the eye
