Abstract
The -axis optical conductivity and dc resistivity are calculated within the - model assuming that the interlayer hopping is incoherent. Use is made of numerical results for spectral functions recently obtained with the finite-temperature Lanczos method for finite two-dimensional systems. In the optimally doped regime we find an anomalous relaxation rate and , suggesting a common relaxation mechanism for intra- and interlayer transport. At low doping a pseudogap opening in the density of states appears to be responsible for a semimetalliclike behavior of .
- Received 1 June 1998
DOI:https://doi.org/10.1103/PhysRevLett.81.3745
©1998 American Physical Society