Investigating the Effect of the Magnetic Field on the Thermal Conductivity of a Single Crystal of YBa 2 Cu 3 O 7−δ

Abstract

The effect of the magnetic field on thermal conductivity of a single crystal of YBa2Cu3 O 7 − δ was investigated using London’s equation. The result of the study shows that the thermal conductivity of YBa2Cu3 O 7 − δ decreases exponentially as the applied magnetic field increases at a uniform temperature and then ‘saturates’. This indicates that magneto-thermal conductivity of YBa2Cu3 O 7 − δ is necessitated by electrons which are scattered by the core of vortices in the mixed state.