1998/07/31 by P. Prelovšek, P. Prelovsek, A. Ramšak +2 · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.81.3745
published as Phys. Rev. Lett. 81 (1998) 3745 · 4 pages, 4 Postscript figures, submitted to Phys.Rev.Lett, added a comparisson with in-plane conductivity, rescaled some figures
arxiv created 1998/08/19 · openalex publication_date 1998/10/26 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The c-axis optical conductivity and dc 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 \ensuremathτc^\ensuremath-1\ensuremath∝\ensuremathω+\ensuremathξcT and \ensuremathρc(T)\ensuremath∝\ensuremathρab(T), 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 \ensuremathρc(T).