Anisotropic Localization Effect in Layered Materials

Details Anisotropic Localization Effect in Layered Materials Anisotropic Localization Effect in Layered Materials

1995-12-18

arxiv.org/abs/cond-mat/9512133v1

Physics

Condensed Matter

Revtex + 5 figures, To appear in Phys. Lett. A

Scientific paper

10.1016/0375-9601(95)00975-2

We investigate localization properties in the highly anisotropic and intrinsically disordered layered material, which is analogous to high-Tc cuprates. By varying the anisotropy of the system which is parameterized by the interlayer hopping $tp$, we find a crossover from two-dimensional (2D) to three-dimensional (3D) behavior at a critical hopping amplitude $tp_c$, where a mobility edge starts to appear. We show that below the mobility edge, anisotropic localization effect may exist for a finite size system, when the $ab$-plane localization length is longer than the system size and the $c$-axis localization length is shorter than the system size. Nevertheless, we argue that such anisotropic localization can not account for the ``semiconductor'' like behavior of the $c$-axis resistivity of high $\Tc$ cuprates.

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