c-axis conductivity in the normal state of cuprate superconductors

Details c-axis conductivity in the normal state of cuprate superconductors c-axis conductivity in the normal state of cuprate superconductors

1998-07-23

arxiv.org/abs/cond-mat/9807315v2

Phys. Rev. Lett. 81 (1998) 3745

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 Postscript figures, submitted to Phys.Rev.Lett, added a comparisson with in-plane conductivity, rescaled some figur

Scientific paper

10.1103/PhysRevLett.81.3745

The c-axis optical conductivity and d.c. resistivity are calculated within the t-J 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, suggesting a common relaxation mechanism for intra- and interlayer transport. At low doping a pseudo-gap opening in the density of states appears to be responsible for a semimetallic-like behavior of d.c. resistivity.

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