Electrical Resistivity Anisotropy from Self-Organized One Dimensionality in High-Temperature Superconductors
Yoichi Ando, Kouji Segawa, Seiki Komiya, A. N. Lavrov
DOI 10.1103/PhysRevLett.88.137005 · Physical Review Letters
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Abstract
We investigate the manifestation of stripes in the in-plane resistivity anisotropy in untwinned single crystals of La2−xSrxCuO4 ( x=0.02–0.04) and YBa2Cu3Oy ( 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 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 50 | Pressure not reported | unknown |
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