Long length scale interaction between magnetism and superconductivity in La0.3Ca0.7MnO3/YBa2Cu3O7 superlattices
GFMC. Dpto. Fisica Aplicada III, Universidad Complutense de Madrid, 28040
2 Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC). 28049 Cantoblanco, Madrid
Corresponding author: a firstname.lastname@example.org
Published online: 3 August 2004
We examine the interplay between ferromagnetism and superconductivity in La0.3Ca0.7MnO3/YBa2Cu3O7 superlattices showing “coexistence” of magnetism and superconductivity. A depression of the critical temperature is observed when manganite layer thickness is increased between 0.9 and 8 nm, pointing to an interplay between ferromagnetism and superconductivity over nanometer length scales. The possibility of a ferromagnetic/superconducting proximity effect to explain these results is analyzed.
PACS: 74.78.Fk – Multilayers, superlattices, heterostructures / 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004