Dichotomy in the $T$-linear resistivity in hole-doped cuprates

Abstract

From analysis of the in-plane resistivity ${\rho }_{ab}(T)$ of La${}_{2-x}$Sr${}_x$CuO${}_4$, we show that normal state transport in overdoped cuprates can be delineated into two regimes in which the electrical resistivity varies approximately linearly with temperature. In the low temperature limit, the $T$-linear resistivity extends over a very wide doping range, in marked contrast to expectations from conventional quantum critical scenarios. The coefficient of this $T$-linear resistivity scales with the superconducting transition temperature $T_c$, implying that the interaction causing this anomalous scattering is also associated with the superconducting pairing mechanism. At high temperatures, the coefficient of the $T$-linear resistivity is essentially doping independent beyond a critical doping $p_{\mathrm{crit}}$ = 0.19 at which the ratio of the two coefficients is maximal. Taking our cue from earlier thermodynamic and photoemission measurements, we conclude that the opening of the normal state pseudogap at $p_{\mathrm{crit}}$ is driven by the loss of coherence of anti-nodal quasiparticles at low temperatures.

18 pages, 4 figures, to appear in Special Theme Issue of Phil. Trans. Roy. Soc. A

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Cited by in corpus (8)

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• Linear in Temperature Resistivity and Associated Mysteries
• Electronic phase diagram of high temperature copper oxide superconductors
• A Tale of Two Metals: contrasting criticalities in the pnictides and hole-doped cuprates
• Mottness Collapse and T-linear Resistivity in Cuprate Superconductors
• Scaling of the Holographic AC conductivity for non-Fermi liquids at criticality
• Kondo $s$-$d$ exchange in the CuO${}_2$ plane as the long sought interaction determining $T_c$ in cuprates
• Underdoped cuprates, manifestations of boson-fermion crossover, `quantum oscillations' and the robust fractional quantum Hall state nu = 2/5