Fig. 2: Linear-in-T resistivity.

Resistivity calculations for a Nd-La_2−xSr_xCuO₄ sample with x = 0.24 (black solid line) and for a Eu-La_2−xSr_xCuO₄ sample with x = 0.24 (black dashed line). The symbols refer to the experimental data extracted from ref. ²⁶ (the error bars of the data are smaller than the symbol size): filled circles for Nd-La_2−xSr_xCuO₄ and empty squares for Eu–La_2−xSr_xCuO₄. For the fitting we used a quasiparticle-charge fluctuations coupling and the elastic scattering rate due to quenched disorder g² = 0.045 and Γ₀ = 13.7 meV for Nd–La_2−xSr_xCuO₄ and g² = 0.0415 and Γ₀ = 12.3 meV for Eu–La_2−xSr_xCuO₄ (see Methods—the Boltzmann equation and calculation of the electron scattering rate).