Quasiparticle transport in the vortex state of YBa_2Cu_3O_6.9
Superconductivity
2009-10-31 v3 Strongly Correlated Electrons
Abstract
The effect of vortices on quasiparticle transport in cuprate superconductors was investigated by measuring the low temperature thermal conductivity of YBa_2Cu_3O_6.9 in magnetic fields up to 8 T. The residual linear term (as T \to 0) is found to increase with field, directly reflecting the occupation of extended quasiparticle states. A study for different Zn impurity concentrations reveals a good agreement with recent calculations for a d-wave superconductor, thereby shedding light on the nature of scattering by both impurities and vortices. It also provides a quantitative measure of the gap near the nodes.
Cite
@article{arxiv.cond-mat/9810323,
title = {Quasiparticle transport in the vortex state of YBa_2Cu_3O_6.9},
author = {May Chiao and R. W. Hill and Christian Lupien and Bojana Popic and Robert Gagnon and Louis Taillefer},
journal= {arXiv preprint arXiv:cond-mat/9810323},
year = {2009}
}
Comments
4 pages, 2 included eps figures, significant new analysis wrt other experiments, to appear in Phys Rev Lett 29 March 1999