Evidence for One-Dimensional Charge Transport in La2−xyNdySrxCuO4

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Science  08 Oct 1999:
Vol. 286, Issue 5438, pp. 265-268
DOI: 10.1126/science.286.5438.265

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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.

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