Anomalous Superconducting Proximity Effect in Hybrid Oxide Heterostructures with Antiferromagnetic Layer

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We report an investigation of current transport in Nb/Au/CaSrCuO/YBaCuO heterostructures including an antiferromagnetic interlayer (CaSrCuO). Epitaxial thin films of YBaCuO and CaSrCuO were grown by laser ablation on NdGaO substrates; the thicknesses of CaSrCuO films were 20 and 50 nm, and x=0.15 or 0.5. Our experimental results show that the superconducting current transport is increased in the Nb/Au/CaSrCuO/YBaCuO heterostructures in comparison with the ones observed in previously studied Nb/Au/YBaCuO heterostructures. It was found that the critical current of the structure is very sensitive to the absolute value and direction of the external magnetic field.
10 pages, 6 figures, PACS:74.45+c

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/117353

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0610140
 http://arxiv.org/abs/cond-mat/0610140

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arXiv