2026-06-26T04:50:56Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/596342024-08-30T16:10:52Zcom_20.500.14352_14col_20.500.14352_15

Prieto, P. Vivas, P. Campillo, G. Baca, E. Castro, L. F. Varela Del Arco, María Ballesteros, C. Villegas, J. E. Arias Serna, Diego León Yebra, Carlos Santamaría Sánchez-Barriga, Jacobo 2023-06-20T20:07:54Z 2023-06-20T20:07:54Z 2001-06-15 0021-8979 10.1063/1.1370994 https://hdl.handle.net/20.500.14352/59634 http://dx.doi.org/10.1063/1.1370994 http://scitation.aip.org/ We report on the magnetic and superconducting properties of La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7) (LCMO/YBCO) superlattices. For a constant LCMO layer thickness of 6 unit cells (u.c.), resistance and susceptibility measurements show superconductivity for YBCO layer thickness in excess of 4 unit cells. The critical temperature increases with YBCO thickness, and a T_(c) of 58 K is found for a YBCO thickness of 10 unit cells. Magnetization measurements show a ferromagnetic transition at 100 K in a (LCMO_(6u.c.)/YBCO_(5 u.c.))_(15 bilayer) superlattice, and a depressed value of the saturation magnetization of 20 emu cm^(-3). These results are discussed in terms of interface disorder (analyzed by x-ray diffraction and transmission electron microscopy) and of the possible interaction between magnetism and superconductivity. eng open access Magnetism and superconductivity in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices journal article