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Normal-state Hall effect and the insulating resistivity of high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>cuprates at low temperatures
The normal-state Hall coefficient ${R}_{H}$ and the in-plane resistivity ${\ensuremath{\rho}}_{\mathrm{ab}}$ are measured in La-doped ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{CuO}}_{y}$ ${(T}_{c}\ensuremath{\simeq}13$ K) single crystals and ${\mathrm{La}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}$ thin films by suppressing superconductivity with 61-T pulsed magnetic fields. In contrast to data above ${T}_{c},$ the ${R}_{H}$ below \ensuremath{\sim}10 K shows little temperature dependence in all the samples …