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Hall-effect measurements of HgBa2CaCu2O6+δ

J. M. Harris, H. Wu, and N. P. Ong

R. L. Meng and C. W. Chu

  • Joseph Henry Laboratories of Physics, Princeton University, Princeton, New Jersey 08544

  • Texas Center for Superconductivity at the University of Houston, Houston, Texas 77204

Phys. Rev. B 50, 3246 – Published 1 August, 1994

DOI: https://doi.org/10.1103/PhysRevB.50.3246

Abstract

The resistivity ρ and Hall coefficient RH have been measured for samples of the two-plane superconductor HgBa2CaCu2O6+δ (Tc∼124 K) with different annealing histories. The observed temperature dependence RH∼1/T (up to 470 K) matches the steep dependence previously seen in 90-K YBa2Cu3O7δ and indicates low-impurity scattering. We find T-linear behavior for ρ in the lowest-resistivity samples and confirm that cotθHT2. These findings add support to Anderson’s proposal of distinct longitudinal and transverse scattering times.

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