Metallic nonsuperconducting phase and d-wave superconductivity in Zn-substituted LaSrCuO

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Measurements of the resistivity, magnetoresistance and penetration depth were made on films of LaSrCuO with up to 12 at.% of Zn substituted for the Cu. The results show that the quadratic temperature dependence of the inverse square of the penetration depth, indicative of d-wave superconductivity, is not affected by doping. The suppression of superconductivity leads to a metallic nonsuperconducting phase, as expected for a pairing mechanism related to spin fluctuations. The metal-insulator transition occurs in the vicinity of kFl~1, and appears to be disorder-driven, with the carrier concentration unaffected by doping.
4 pages,4 figures, to appear in PRL Replacement of the original paper incorporates minor revisions suggested by the referee

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/29908

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9911149
 http://arxiv.org/abs/cond-mat/9911149

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arXiv