Thermal Hall conductivity of marginal Fermi liquids subject to out-of plane impurities in high-$T_c$ cuprates

Abstract

The effect of out-of-plane impurities on the thermal Hall conductivity ${\kappa }_{xy}$ of in-plane marginal-Fermi-liquid (MFL) quasiparticles in high-$T_c$ cuprates is examined by following the work on electrical Hall conductivity ${\sigma }_{xy}$ by Varma and Abraham [Phys. Rev. Lett. 86, 4652 (2001)]. It is shown that the effective Lorentz force exerted by these impurities is a weak function of energies of the MFL quasiparticles, resulting in nearly the same temperature dependence of ${\kappa }_{xy}/T$ and ${\sigma }_{xy}$, indicative of obedience of the Wiedemann-Franz law. The inconsistency of the theoretical result with the experimental one is speculated to be the consequence of the different amounts of out-of-plane impurities in the two YBaCuO samples used for the ${\kappa }_{xy}$ and ${\sigma }_{xy}$ measurements.

5 pages, 2 eps figures; final version

References in corpus (1)

• Erratum: Effective Lorentz Force due to Small-Angle Impurity Scattering: Magnetotransport in High-$T_c$ Superconductors

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