%0 Journal Article
%A Sefrioui, Zouhair
%A Arias Serna, Diego
%A Peña, V.
%A Villegas, J. E.
%A Prieto, P.
%A Varela Del Arco, María
%A León Yebra, Carlos
%A Martínez, J. L.
%A Santamaría Sánchez-Barriga, Jacobo
%T Ferromagnetic/superconducting proximity effect in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices
%D 2003
%@ 1098-0121
%U https://hdl.handle.net/20.500.14352/51443
%X We study the interplay between magnetism and superconductivity in high-quality YBa_(2)Cu_(3)O_(7)(YBCO)/La_(0.7)Ca_(0.3)MnO_(3)(LCMO) superlattices. We find evidence for the YBCO superconductivity depression in the presence of the LCMO layers. We show that due to its short coherence length, superconductivity survives in the YBCO down to a much smaller thickness in the presence of the magnetic layer than in low Tc superconductors. We also find that for a fixed thickness of the superconducting layer, superconductivity is depressed over a thickness interval of the magnetic layer in the 100 nm range. This is a much longer length scale than that predicted by the theory of ferromagnetic/superconducting proximity effect.
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