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

By Z. Sefrioui, Diego Arias Serna, V. Peña, J. Villegas, M. V. D. Arco, P. Prieto, C. Yebra, J. Martínez, Jacobo Santamaría Sánchez-Barriga. 2003

143 citations recorded by the source corpus.

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.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/b70164c38921cb35ae802add14bea9a18ede105e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Condensed Matter Physics

1. A. Buzdin
2. V. Ryazanov
3. G. Khaliullin
4. Bernhard Keimer
5. F. Bergeret
6. J. Knolle
7. J. Linder
8. I. Kimchi

In Electronic, Optical and Magnetic Materials

1. A. Buzdin
2. V. Ryazanov
3. G. Khaliullin
4. Bernhard Keimer
5. F. Bergeret
6. J. Knolle
7. J. Linder
8. I. Kimchi

Citations in the corpus

• Proximity effect in superconductor-ferromagnet heterostructures (2005, background): “For a fixed thickness of the superconducting layer, the critical temperature is dependent over a thickness of LCMO layer in the 100 nm range (Sefrioui et al., 2003 and Peña et al., 2004).”
• Magnetism at the interface between ferromagnetic and superconducting oxides (2006, background): “High-quality cuprate-manganite superlattices have recently been prepared, and initial work has already revealed intriguing macroscopic phenomena, such as giant magnetoresistance and proximity-induced metal–insulator transition”