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oai:docta.ucm.es:20.500.14352/514432024-08-30T15:59:08Zcom_20.500.14352_14col_20.500.14352_15

Ferromagnetic/superconducting proximity effect in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices Sefrioui, Zouhair Arias Serna, Diego Peña, V. Villegas, J. E. Prieto, P. Varela Del Arco, María León Yebra, Carlos Martínez, J. L. Santamaría Sánchez-Barriga, Jacobo © 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. 2023-06-20T10:54:54Z 2023-06-20T10:54:54Z 2003-06-13 journal article 1098-0121 10.1103/PhysRevB.67.214511 https://hdl.handle.net/20.500.14352/51443 http://dx.doi.org/10.1103/PhysRevB.67.214511 http://journals.aps.org/ eng MAT2000-1468 07N/0008/2001 open access American Physical Society