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Science 8 October 1999:
Vol. 286. no. 5438, pp. 265 - 268
DOI: 10.1126/science.286.5438.265
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Reports

Evidence for One-Dimensional Charge Transport in La2-x-yNdySrxCuO4

Takuya Noda, Hiroshi Eisaki, Shin-ichi Uchida

Doping dependences of the resistivity and the Hall coefficient are presented for neodymium-doped lanthanum strontium cuprate (La1.4-xNd0.6SrxCuO4) in the static spin-charge stripe ordered phase. For doping concentration x <= 1/8, a rapid decrease in the magnitude of the Hall coefficient at low temperatures provides evidence for one-dimensional charge transport, whereas for x > 1/8, the Hall coefficient remains relatively large in the ordered phase. The results indicate a crossover from one- to two-dimensional charge transport taking place at x = 1/8.

Department of Superconductivity, The University of Tokyo, Tokyo 113-8656, Japan.

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