Quasiparticle thermal Hall angle and magnetoconductance in YBa_2Cu_3O_x

Details Quasiparticle thermal Hall angle and magnetoconductance in YBa_2Cu_3O_x Quasiparticle thermal Hall angle and magnetoconductance in YBa_2Cu_3O_x

1999-04-09

arxiv.org/abs/cond-mat/9904138v2

Phys. Rev. Lett. 82, 5108 (1999)

Physics

Condensed Matter

Superconductivity

4 pages in Tex, 5 figures in EPS; replaced on 5/12/99, minor changes

Scientific paper

10.1103/PhysRevLett.82.5108

We present a way to extract the quasiparticle (qp) thermal conductivity Kappa_e and mean-free-path in YBa_2Cu_3O_x, using the thermal Hall effect and the magnetoconductance of Kappa_e. The results are very consistent with heat capacity experiments. Moreover, we find a simple relation between the thermal Hall angle Theta_Q and the H-dependence of Kappa_e, as well as numerical equality between Theta_Q and the electrical Hall angle. The findings also reveal an anomalously anisotropic scattering process in the normal state.

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