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

Yoichi Ando, Kouji Segawa, Seiki Komiya, and A. N. Lavrov
Phys. Rev. Lett. 88, 137005 – Published 19 March 2002
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Abstract

We investigate the manifestation of stripes in the in-plane resistivity anisotropy in untwinned single crystals of La2xSrxCuO4 ( x=0.020.04) and YBa2Cu3Oy ( y=6.357.0). It is found that both systems show strongly temperature-dependent in-plane anisotropy in the lightly hole-doped region and that the anisotropy in YBa2Cu3Oy grows with decreasing y below 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.

  • Received 31 July 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.137005

©2002 American Physical Society

Authors & Affiliations

Yoichi Ando, Kouji Segawa, Seiki Komiya, and A. N. Lavrov

  • Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, Japan

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Issue

Vol. 88, Iss. 13 — 1 April 2002

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