Anisotropic Quantum Transport in Layered High--$T_c$ Cuprates

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A random lattice model with dilute interlayer bonds of density $p$ is proposed to describe the underdoped high--$T_c$ cuprates. We show analytically via an appropriate perturbation expansion and verify independently by numerical scaling of the conductance that for any finite $p$ the states remain extended in all directions, despite the presence of interlayer disorder. However, the obtained electronic transport is highly anisotropic with violent conductance fluctuations occuring in the layering direction, which can be responsible for the experimentally observed metallic "in-plane" and semiconducting "out-of-plane" resistivity of the cuprates.
12 pages, revtex file, 3 postscript files, submitted to PRL

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Disordered Systems and Neural Networks

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http://salesiana.dossiersoluciones.com/handle/123456789/151904

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9708184
 http://arxiv.org/abs/cond-mat/9708184

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arXiv