%0 Journal Article
%T Hidden Fermi-liquid behavior throughout the phase diagram of the cuprates
%A N. Bari£¿i£¿
%A M. K. Chan
%A M. J. Veit
%A C. J. Dorow
%A Y. Ge
%A Y. Tang
%A W. Tabis
%A G. Yu
%A X. Zhao
%A M. Greven
%J Physics
%D 2015
%I arXiv
%X The superconducting state of the cuprates evolves from an enigmatic "strange metal" phase that is characterized by a large resistivity with extended linear temperature dependence. At moderate and low carrier doping, there exists an intermediate pseudogap phase with a partially gapped Fermi surface. These unusual properties have motivated proposals to consider unconventional electronic scattering mechanisms and even to abandon the Landau quasiparticle paradigm. We present planar dc-resistivity and Hall-effect measurements for HgBa2CuO4+{\delta} and combine them with prior results for other cuprate compounds to demonstrate that the transport scattering rate is quadratic in temperature across the pseudogap temperature T*, and moreover doping and compound independent. Together with prior evidence for Fermi-liquid charge transport at high doping and at temperatures below T*, this universal behavior implies an underlying conventional scattering mechanism throughout the entire phase diagram. Moreover, this result points to the distinct possibility that the approximately T-linear resistive behavior in the strange-metal phase is simply the result of the combined effects of a quadratic scattering rate and an approximately T-linear carrier density.
%U http://arxiv.org/abs/1507.07885v1