Electrical Resistivity Anisotropy from Self-Organized One-Dimensionality in High-Temperature Superconductors

Details Electrical Resistivity Anisotropy from Self-Organized One-Dimensionality in High-Temperature Superconductors Electrical Resistivity Anisotropy from Self-Organized One-Dimensionality in High-Temperature Superconductors

2001-08-03

arxiv.org/abs/cond-mat/0108053v2

Phys. Rev. Lett. 88, 137005 (2002).

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures (including one color figure), final version accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.88.137005

We investigate the manifestation of the stripes in the in-plane resistivity anisotropy in untwinned single crystals of La_{2-x}Sr_{x}CuO_{4} (x = 0.02 - 0.04) and YBa_{2}Cu_{3}O_{y} (y = 6.35 - 7.0). It is found that both systems show strongly temperature-dependent in-plane anisotropy in the lightly hole-doped region and that the anisotropy in YBa_{2}Cu_{3}O_{y} grows with decreasing y below about 6.60 despite the decreasing orthorhombicity, which gives most direct evidence that electrons self-organize into a macroscopically anisotropic state. The transport is found to be easier along the direction of the spin stripes already reported, demonstrating that the stripes are intrinsically conducting in cuprates.

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