Sliding Density Wave in Sr14Cu24O41 Ladder Compounds

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Science  26 Jul 2002:
Vol. 297, Issue 5581, pp. 584-587
DOI: 10.1126/science.1070481

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We used transport and Raman scattering measurements to identify the insulating state of self-doped spin ½ two-leg ladders of Sr14Cu24O41 as a weakly pinned, sliding density wave with nonlinear conductivity and a giant dielectric response that persists to remarkably high temperatures.

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