Preparation of a ferromagnetic barrier in YBa2Cu3O7– δ thinner than the coherence length

Thin ferromagnetic La2∕3Ca1∕3MnO3 layers are deposited in between two layers of the high-Tc superconductor YBa2Cu3O7–δ (YBCO) by pulsed laser deposition. Using a tailored buffer layer allows the change of the orientation of the CuO2 planes inside the superconducting layers. With this technique it is...

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Bibliographic Details
Published in:Journal of applied physics 2015-12, Vol.118 (22)
Main Authors: Soltan, S., Albrecht, J., Goering, E., Schütz, G., Mustafa, L., Keimer, B., Habermeier, H.-U.
Format: Article
Language:English
Subjects:
Applied physics
Barrier layers
Buffer layers
Coherence length
Electrical junctions
Ferromagnetism
Josephson junctions
Pulsed laser deposition
Pulsed lasers
Superconductivity
Superconductors
YBCO superconductors
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Summary:Thin ferromagnetic La2∕3Ca1∕3MnO3 layers are deposited in between two layers of the high-Tc superconductor YBa2Cu3O7–δ (YBCO) by pulsed laser deposition. Using a tailored buffer layer allows the change of the orientation of the CuO2 planes inside the superconducting layers. With this technique it is possible to produce ferromagnetic barrier layers with high ferromagnetic transition temperatures that are thinner than the coherence length of the adjacent superconductors. Magnetization and electric transport measurements suggest that this geometry might be successful for the generation of ferromagnetic Josephson junctions in high temperature superconducting YBCO.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4937404