Physics – Condensed Matter – Superconductivity
Scientific paper
2006-03-28
Phys. Rev. B, 72, 052511 (2005)
Physics
Condensed Matter
Superconductivity
4 pages
Scientific paper
10.1103/PhysRevB.72.052511
The phonon contribution to the thermal conductivity at low temperature in superconductors with line nodes is calculated assuming that scattering by both nodal quasiparticles and the sample boundaries is significant. It is determined that, within the regime in which the quasiparticles are in the universal limit and the phonon attenuation is in the hydrodynamic limit, there exists a wide temperature range over which the phonon thermal conductivity varies as $T^2$. This behaviour comes from the fact that transverse phonons propagating along certain directions do not interact with nodal quasiparticles and is thus found to be required by the symmetry of the crystal and the superconducting gap, independent of the model used for the electron-phonon interaction. The $T^2$-dependence of the phonon thermal conductivity occurs over a well-defined intermediate temperature range: at higher $T$ the temperature-dependence is found to be linear while at lower $T$ the usual $T^3$ (boundary-limited) behaviour is recovered. Results are compared to recent measurements of the thermal conductivity of Tl2201, and are shown to be consistent with the data.
No associations
LandOfFree
Low-$T$ Phononic Thermal Conductivity in Superconductors with Line Nodes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Low-$T$ Phononic Thermal Conductivity in Superconductors with Line Nodes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-$T$ Phononic Thermal Conductivity in Superconductors with Line Nodes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-463166