Angle-dependent magnetothermal conductivity in d-wave superconductors

Details Angle-dependent magnetothermal conductivity in d-wave superconductors Angle-dependent magnetothermal conductivity in d-wave superconductors

1999-12-14

arxiv.org/abs/cond-mat/9912253v1

Physica C 341-348, p. 1947 (2000)

Physics

Condensed Matter

Superconductivity

2 pages, submitted to proceedings of M2S-HTSC-VI (Houston)

Scientific paper

10.1016/S0921-4534(00)01417-9

We analyse the behavior of the thermal conductivity, $\kappa(H)$, in the vortex state of a quasi-two-dimensional d-wave superconductor when both the heat current and the applied magnetic field are in the basal plane. At low temperature the effect of the field is accounted for in a semiclassical approximation, via a Doppler shift in the spectrum of the nodal quasiparticles. In that regime $\kappa(H)$ exhibits twofold oscillations as a function of the angle between the direction of the field in the plane and the direction of the heat current, in agreement with experiment.

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