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Data for Linear-in temperature resistivity from an isotropic Planckian scattering rate Gaël Grissonnanche (24956347) Yawen Fang (17493939) Anaëlle Legros (24956350) Simon Verret (24956353) Francis Laliberte (24956356) Clément Collignon (24956359) Jianshi Zhou (1753051) David Graf (1776046) Paul Goddard (564595) Louis Taillefer (24956362) B. J. Ramshaw (10738750) Condensed matter Superconductivity Particles (Nuclear physics) Migrated from ePrints A variety of ‘strange metals’ exhibit resistivity that decreases linearly with temperature as the temperature decreases to zero1,2,3, in contrast to conventional metals where resistivity decreases quadratically with temperature. This linear-in-temperature resistivity has been attributed to charge carriers scattering at a rate given by ħ/τ = αkBT, where α is a constant of order unity, ħ is the Planck constant and kB is the Boltzmann constant. This simple relationship between the scattering rate and temperature is observed across a wide variety of materials, suggesting a fundamental upper limit on scattering—the ‘Planckian limit’4,5—but little is known about the underlying origins of this limit. Here we report a measurement of the angle-dependent magnetoresistance of La1.6−xNd0.4SrxCuO4—a hole-doped cuprate that shows linear-in-temperature resistivity down to the lowest measured temperatures6. The angle-dependent magnetoresistance shows a well defined Fermi surface that agrees quantitatively with angle-resolved photoemission spectroscopy measurements7 and reveals a linear-in-temperature scattering rate that saturates at the Planckian limit, namely α = 1.2 ± 0.4. Remarkably, we find that this Planckian scattering rate is isotropic, that is, it is independent of direction, in contrast to expectations from ‘hotspot’ models8,9. Our findings suggest that linear-in-temperature resistivity in strange metals emerges from a momentum-independent inelastic scattering rate that reaches the Planckian limit.<br><br>The archive contains the experimental data from the following figures: Figure 2a Extended Data (ED) Figure 1b Extended Data (ED) Figure 5a The rho_xx and rho_zz data shown in Figure 3 are published in DOI: 10.1016/j.physc.2009.11.073 DOI: 10.1038/NPHYS1109 Data are listed in the archive as follows Fig??_HxxTyyphizz.dat where ?? = the figure number, xx = the applied magnetic field value in Tesla, yy = the sample temperature in kelvin, and zz = the azimuthal angle in degrees. 2021-07-29T00:00:00Z Dataset Dataset 10.82444/warw.33822934.v1 https://figshare.com/articles/dataset/Data_for_Linear-in_temperature_resistivity_from_an_isotropic_Planckian_scattering_rate/33822934 CC BY 4.0