Influence of a low magnetic field on the thermal diffusivity of Bi-2212
arXiv:cond-mat/0205240 · doi:10.1103/PhysRevB.65.214523
Abstract
The thermal diffusivity of a Bi-2212 polycrystalline sample has been measured under a 1T magnetic field applied perpendicularly to the heat flux. The magnetic contribution to the heat carrier mean free path has been extracted and is found to behave as a simple power law. This behavior can be attributed to a percolation process of electrons in the vortex lattice created by the magnetic field.
10 pages, 3 figures; to be published in Phys. Rev. B