We present the results of a microscopic calculation of the longitudinal thermal conductivity, κxx, of a d-wave superconductor in the mixed state. Our results show an increase in the thermal conductivity with the applied field at low temperatures and a decrease followed by a nearly field independent κxx(H) at higher temperatures, in qualitative agreement with the experimental results. We discuss the relationship between the slope of the superconducting gap and the plateau in κxx(H). © 1999 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Vekhter, I., & Houghton, A. (1999). Quasiparticle thermal conductivity in the vortex state of high- Tccuprates. Physical Review Letters, 83 (22), 4626-4629. https://doi.org/10.1103/PhysRevLett.83.4626