Sefrioui, ZouhairArias Serna, DiegoPeña, V.Villegas, J. E.Prieto, P.Varela Del Arco, MaríaLeón Yebra, CarlosMartínez, J. L.Santamaría Sánchez-Barriga, Jacobo2023-06-202023-06-202003-06-131098-012110.1103/PhysRevB.67.214511https://hdl.handle.net/20.500.14352/51443© 2003 The American Physical Society. Work was supported by Contract No. CICYT MAT2000- 1468, No. CAM 07N/0008/2001 and Fundación Ramón Areces. We thank R. Escudero, J. Fontcuberta, J. M. de Teresa, C. Sa de Melo, I. K. Schuller, J. L. Vicent, and V. Vlasko-Vlasov for useful conversations.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.engjournal articlehttp://dx.doi.org/10.1103/PhysRevB.67.214511http://journals.aps.org/open access537538.9Superconducting transition-temperatureMultilayersFerromagnetMagnetismHeterostructuresTrilayersInterplayInjectionDisorderSystem.ElectricidadElectrónica (Física)Física de materialesFísica del estado sólido2202.03 Electricidad2211 Física del Estado Sólido