INVESTIGADORES
NIEVA Gladys Leonor
artículos
Título:
Hall effect in a GdBa2CU3O7-d/La0.75Sr0.25MnO3 perovskite bilayer
Autor/es:
N. HABERKORN; G. BRIDOUX; E. OSQUIGUIL; G. NIEVA; J. GUIMPEL
Revista:
APPLIED SURFACE SCIENCE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2007 vol. 254 p. 222 - 224
ISSN:
0169-4332
Resumen:
We present results on the Hall coefficient RH in the normal state for a GdBa2Cu3O7-d/La0.75Sr0.25MnO3 bilayer and a La0.75Sr0.25MnO3 film grown by dc magnetron sputtering on (1 0 0) SrTiO3.We find that the electric transport on the bilayer can be qualitatively described using a simple parallel layers model. The GdBa2Cu3O7d layer presents a carrier density approximately equal to that reported for 7-d = 6.85 oxygen doping. Also we observe an unexpected presence of two Hall resistivity regimes, effects that may be associated with the internal magnetic field induced on the superconducting layer by the ferromagnetic layer.
