RT Journal Article
T1 Magnetism and superconductivity in La_(0.7)Ca_(0.3)MnO_(3)/YBa_(2)Cu_(3)O_(7-δ) superlattices
A1 Prieto, P.
A1 Vivas, P.
A1 Campillo, G.
A1 Baca, E.
A1 Castro, L. F.
A1 Varela Del Arco, María
A1 Ballesteros, C.
A1 Villegas, J. E.
A1 Arias Serna, Diego
A1 León Yebra, Carlos
A1 Santamaría Sánchez-Barriga, Jacobo
AB 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.
PB American Institute of Physics
SN 0021-8979
YR 2001
FD 2001-06-15
LK https://hdl.handle.net/20.500.14352/59634
UL https://hdl.handle.net/20.500.14352/59634
LA eng
NO © 2001 American Institute of Physics. Financial support from COLCIENCIAS, Colombia, is acknowledged. Four of the authors (M.V., C.B., D.A., and J.S.) are grateful for CICYT Grant No. MAT99-1706 E. another author (J.E.V.) thanks Comunidad de Madrid for a fellowship and ClCYT Grant No. MAT 99-0724 for financial support. The authors thank Kai Lu, Chris Leighton, and Ivan K. Schuller for helpful conversations and assistance with the magnetic measurements. They thank J. L. Vicent for critical reading of the manuscript.
NO COLCIENCIAS, Colombia
NO CICYT
NO Comunidad de Madrid
DS Docta Complutense
RD 7 abr 2025