Abstract
It is shown that a strong intraplanar incoherent scattering can effectively block the interplanar coherent tunneling between the weakly coupled planes of the highly anisotropic but clean (intrinsic) materials such as the optimally doped high-T c layered cuprate superconductors. The calculated normal-state c-axis resistivity ρ c (T) then follows the metal-like temperature dependence of the ab-plane resistivity ρab(T) at high temperatures. At low enough temperatures, however, ρ c (T) exhibits a non-metal like upturn even as ρab(T) remains metallic. Moreover, in the metallic regime, ρ c (T) is not limited by the maximum metallic resistivity of Mott–Ioffe–Regel. This correlation between the intrinsic ρ c (T) and ρab(T) is observed in the normal state of the high-T c stoichiometric cuprates.
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