Thermal conductivity of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/ superconductors in high magnetic fields

The thermal conductivity of high temperature superconductors provides an understanding of the nature of the charge carriers, phonons, vortices, and the scattering processes between them. Recently, the magnetothermal conductivity has been considered to be a key factor in the understanding of the vortex dynamics. Here we report thermal conductivity measurements of bulk Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/ superconductors in an applied magnetic field up to 20 T. The measurements were taken for a wide range of temperatures around T/sub c/. The superconducting parameters were recovered from the obtained data using theoretical model developed by Ausloos et al.