Hidden Fermi-liquid charge transport in the antiferromagnetic phase of the electron-doped cuprates

TL;DR

This study demonstrates that electron-doped cuprates exhibit Fermi-liquid charge transport behavior in their antiferromagnetic phase, with universal quadratic temperature dependence of scattering rates, challenging previous assumptions about their non-Fermi-liquid nature.

Contribution

It provides systematic evidence of Fermi-liquid behavior in electron-doped cuprates deep within the antiferromagnetic phase, highlighting universality across different materials and doping levels.

Findings

Quadratic temperature dependence of scattering rate

Universal behavior across compounds and doping

Resistivity upturn has the same origin in electron- and hole-doped cuprates

Abstract

Systematic analysis of the planar resistivity, Hall effect and cotangent of the Hall angle for the electron-doped cuprates reveals underlying Fermi-liquid behavior even deep in the antiferromagnetic part of the phase diagram. The transport scattering rate exhibits a quadratic temperature dependence, and is nearly independent of doping, compound and carrier type (electrons vs. holes), and hence universal. Our analysis moreover indicates that the material-specific resistivity upturn at low temperatures and low doping has the same origin in both electron- and hole-doped cuprates.