Ferromagnetic/superconducting proximity effect in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices



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Sefrioui, Zouhair and Arias Serna, Diego and Peña, V. and Villegas, J. E. and Varela del Arco, María and Prieto, P. and León Yebra, Carlos and Martínez, J. L. and Santamaría Sánchez-Barriga, Jacobo (2003) Ferromagnetic/superconducting proximity effect in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices. Physical review B, 67 (21). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.67.214511


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.

Item Type:Article
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© 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.

Uncontrolled Keywords:Superconducting transition-temperature; Multilayers; Ferromagnet; Magnetism; Heterostructures; Trilayers; Interplay; Injection; Disorder; System.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:30743
Deposited On:10 Jun 2015 08:48
Last Modified:10 Dec 2018 14:58

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