Coherent `ab' and `c' transport theory of high-$T_{c}$ cuprates

Details Coherent `ab' and `c' transport theory of high-$T_{c}$ cuprates Coherent `ab' and `c' transport theory of high-$T_{c}$ cuprates

1996-07-14

arxiv.org/abs/cond-mat/9607098v1

Physics

Condensed Matter

12 pages, Latex, 3 figures available upon request

Scientific paper

10.1103/PhysRevLett.77.4796

We propose a microscopic theory of the `$c$'-axis and in-plane transport of copper oxides based on the bipolaron theory and the Boltzmann kinetics. The fundamental relationship between the anisotropy and the spin susceptibility is derived, $\rho_{c}(T,x)/\rho_{ab}(T,x)\sim x/\sqrt{T}\chi_{s}(T,x)$. The temperature $(T)$ and doping $(x)$ dependence of the in-plane, $\rho_{ab}$ and out-of-plane, $\rho_{c}$ resistivity and the spin susceptibility, $\chi_{s}$ are found in a remarkable agreement with the experimental data in underdoped, optimally and overdoped $La_{2-x}Sr_{x}CuO_{4}$ for the entire temperature regime from $T_{c}$ up to $800K$. The normal state gap is explained and its doping and temperature dependence is clarified.

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