Magnetism and superconductivity in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices

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...

Descripción completa

Detalles Bibliográficos
Autores: 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
Tipo de recurso: artículo
Fecha de publicación:2001
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59634
Acceso en línea:https://hdl.handle.net/20.500.14352/59634
Access Level:acceso abierto
Palabra clave:537
538.9
Giant magnetoresistance
Thin-films
Multilayers
Disorder.
Electricidad
Electrónica (Física)
Física de materiales
Física del estado sólido
2202.03 Electricidad
2211 Física del Estado Sólido
Descripción
Sumario: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.

Similares en LA Referencia