Normal-State Hall Effect and the Insulating Resistivity of High-T_c Cuprates at Low Temperatures

Details Normal-State Hall Effect and the Insulating Resistivity of High-T_c Cuprates at Low Temperatures Normal-State Hall Effect and the Insulating Resistivity of High-T_c Cuprates at Low Temperatures

1997-10-15

arxiv.org/abs/cond-mat/9710155v1

Phys. Rev. B 56 (1997) 8530R-8533R (Rapid Communications)

Physics

Condensed Matter

Superconductivity

4 pages, revtex, 2 figures

Scientific paper

10.1103/PhysRevB.56.R8530

The normal-state Hall coefficient R_H and the in-plane resistivity \rho_{ab} are measured in La-doped Bi_{2}Sr_{2}CuO_{y} (T_c \simeq 13 K) single crystals and La_{2-x}Sr_{x}CuO_{4} thin films by suppressing superconductivity with 61-T pulsed magnetic fields. In contrast to data above T_c, the R_H below \sim 10 K shows little temperature dependence in all the samples measured, irrespective of whether \rho_{ab} exhibits insulating or metallic behavior. Thus, whatever physical mechanism gives rise to insulating behavior in the low-temperature normal state, it leaves the Hall conductivity relatively unchanged.

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