Magnetism and superconductivity in La0.7Ca0.3MnO3/YBa2Cu3O7−δ superlattices

• DOI: 10.1063/1.1370994
• Publication Date: 2002-07-26T13:26:45Z
• Authors: P. Prieto; P. Vivas; G. Campillo; E. Baca; L. F. Castro; M. Varela; C. Ballesteros; J. E. Villegas; D. Arias; C. León; J. Santamarı́a
• Keywords: Magnetism

We report on the magnetic and superconducting properties of La0.7Ca0.3MnO3/YBa2Cu3O7 (LCMO/YBCO) superlattices. For a constant LCMO layer thickness 6 unit cells (u.c.), resistance susceptibility measurements show superconductivity for YBCO in excess 4 cells. The critical temperature increases with thickness, Tc 58 K is found 10 Magnetization ferromagnetic transition at 100 (LCMO6 u.c./YBCO5 u.c.)15 bilayer superlattice, depressed value saturation magnetization 20 emu cm−3. These results are discussed terms interface disorder (analyzed by x-ray diffraction transmission electron microscopy) possible interaction between magnetism superconductivity.