Electric transport measurements on La sub(0.7)Ca sub(0.3)MnO sub(3)/YBa sub(2)Cu3O sub(7- delta ) heterostructures

Charge transport measurements were performed on La sub(0.7)Ca sub(0.3)MnO sub(3)/YBa sub(2)Cu sub(3)O sub(7- delta ) (LCMO/YBCO) trilayer samples. They reveal that the out-of-plane stray field gives rise to flux vortices whose dissipation produces resistance peaks at the coercive fields of the top a...

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Bibliographic Details
Published in:Journal of physics. Conference series 2011-01, Vol.273, p.1-4
Main Authors: Hu, T, Xiao, H, Visani, C, Santamaria, J, Almasan, C C
Format: Article
Language:English
Subjects:
Charge transport
COPPER OXIDE
Flux
FLUXES
Magnetoresistance
Magnetoresistivity
MEASUREMENT
Spin valves
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Transition temperature
YBCO superconductors
YTTRIUM OXIDE
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Summary:Charge transport measurements were performed on La sub(0.7)Ca sub(0.3)MnO sub(3)/YBa sub(2)Cu sub(3)O sub(7- delta ) (LCMO/YBCO) trilayer samples. They reveal that the out-of-plane stray field gives rise to flux vortices whose dissipation produces resistance peaks at the coercive fields of the top and bottom LCMO layers. A superconducting surface spin valve effect, similar to the one present in bilayer samples, was also observed in trilayers. These results were observed in the LCMO/YBCO trilayers below the superconducting transition temperature of the trilayers and are not present in the normal state, which shows the typical two fold magnetoresistance behavior.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/273/1/012090