C-axis Transport in Bilayer Cuprates and Relation to Pseudogap
Abstract
We consider the effect of interband transitions on the c-axis conductivity, DC resistivity, and thermal conductivity in a plane-chain bilayer model of a cuprate. The relation between the c-axis resistivity and thermal conductivity is governed by the Wiedemann-Franz law. When the perpendicular hopping matrix element between chain and plane () is small, the c-axis DC resistivity shows a characteristic upturn as the temperature is lowered and the infrared conductivity develops a pseudogap. As is increased, intraband transitions start to dominate and a more conventional response is obtained. Analytical results for a simple plane-plane bilayer are also given, including the frequency sum rule of the optical conductivity.
Keywords
Cite
@article{arxiv.cond-mat/9702064,
title = {C-axis Transport in Bilayer Cuprates and Relation to Pseudogap},
author = {W. C. Wu and W. A. Atkinson and J. P. Carbotte},
journal= {arXiv preprint arXiv:cond-mat/9702064},
year = {2007}
}
Comments
9 pages, 7 figures, submitted to Phys. Rev. B