%0 Journal Article
%T Interplane Transport and Superfluid Density in Layered Superconductors
%A S. V. Dordevic
%A E. J. Singley
%A D. N. Basov
%A J. H. Kim
%A M. B. Maple
%A E. Bucher
%J Physics
%D 2001
%I arXiv
%R 10.1103/PhysRevB.65.134511
%X We report on generic trends in the behavior of the interlayer penetration depth $\lambda_c$ of several different classes of quasi two-dimensional superconductors including cuprates, Sr$_2$RuO$_4$, transition metal dichalcogenides and organic materials of the $(BEDT-TTF)_2X$-series. Analysis of these trends reveals two distinct patterns in the scaling between the values of $\lambda_c$ and the magnitude of the DC conductivity: one realized in the systems with a Fermi liquid (FL) ground state and the other seen in systems with a marked deviation from the FL response. The latter pattern is found primarily in under-doped cuprates and indicates a dramatic enhancement (factor $\simeq 10^2$) of the energy scale $\Omega_C$ associated with the formation of the condensate compared to the data for the FL materials. We discuss implications of these results for the understanding of pairing in high-$T_c$ cuprates.
%U http://arxiv.org/abs/cond-mat/0102455v1