Charge Transport Properties of Lightly-Doped Cuprates: Behavior of the Hall Coefficient

TL;DR

This study investigates the in-plane charge transport and Hall coefficient behavior in lightly-doped cuprates LSCO and YBCO, revealing universal properties and temperature-dependent trends in the antiferromagnetic regime.

Contribution

It provides the first comparative analysis of ho_{ab}(T) and R_{H}(T) in lightly-doped LSCO and YBCO, demonstrating their universal behavior.

Findings

R_{H} is nearly constant at moderate temperatures

R_{H} increases at low temperatures

Transport properties are universal among lightly-doped cuprates

Abstract

Behavior of \rho_{ab}(T) and R_{H}(T) is presented for LSCO and YBCO single crystals in the lightly hole-doped antiferromagnetic region, with an emphasis on the R_{H}(T) data. In both systems, R_{H} is virtually constant at moderate temperatures and tends to increase at low temperatures. Since essentially the same behavior of \rho_{ab}(T) and R_{H}(T) is observed in both LSCO and YBCO, we discuss that the in-plane charge transport properties are universal among the cuprates in the lightly-doped regime and that the R_{H}(T) data we obtained represent the genuine behavior of the Hall effect in this regime.