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Quasiparticle thermal Hall angle and magnetoconductance in YBa2Cu3Ox

K. Krishana, N. P. Ong, Y. Zhang, Z. A. Xu, R. Gagnon, L. Taillefer

cond-mat.supr-conarXiv:cond-mat/9904138

Abstract

We present a way to extract the quasiparticle (qp) thermal conductivity Kappae and mean-free-path in YBa2Cu3Ox, using the thermal Hall effect and the magnetoconductance of Kappae. The results are very consistent with heat capacity experiments. Moreover, we find a simple relation between the thermal Hall angle ThetaQ and the H-dependence of Kappae, as well as numerical equality between ThetaQ and the electrical Hall angle. The findings also reveal an anomalously anisotropic scattering process in the normal state.

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