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Abstract:

We have studied the dependence of impurity vs band effects in the appearance of inverse giant magnetoresistance (IGMR) in Cu/Fe superlattices with Cr. Current in plane (CIP) and current perpendicular to the plane geometries are considered. For the calculation of the conductivities, we have used the linearized Boltzmann equation in the relaxation time approximation. Cr impurity effects are taken into account through the spin-dependent relaxation times and the band effects through the semiclassical velocities obtained from the local-density approximation calculated electronic structure. The larger the Cr/Fe hybridization strength, the bigger is the tendency towards IGMR. In particular, in CIP geometry roughness at these interfaces increases the IGMR range. The calculated giant magnetoresistance ratios have been compared with the experimental results. From this comparison we conclude that the experimental data can only be explained by taking into account Cr bands. © 2002 The American Physical Society.

Registro:

Documento: Artículo
Título:Combined impurity and band effects on the appearance of inverse giant magnetoresistance in Cu/Fe multilayers with Cr
Autor:Milano, J.; Llois, A.M.; Steren, L.B.
Filiación:Departamento de Física, Comisión Nacional de Energía Atómica, Avenida General Paz 1499, San Martín, 1650, Argentina
Departamento de Física " Juan José Giambiagi,”, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón I, Ciudad Universitaria, Buenos Aires, 1429, Argentina
Centro Atómico Bariloche, Instituto Balseiro, S.C. de Bariloche, 8400, Argentina
Año:2002
Volumen:66
Número:13
Página de inicio:1
Página de fin:7
DOI: http://dx.doi.org/10.1103/PhysRevB.66.134405
Título revista:Physical Review B - Condensed Matter and Materials Physics
Título revista abreviado:Phys. Rev. B Condens. Matter Mater. Phys.
ISSN:10980121
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v66_n13_p1_Milano

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Citas:

---------- APA ----------
Milano, J., Llois, A.M. & Steren, L.B. (2002) . Combined impurity and band effects on the appearance of inverse giant magnetoresistance in Cu/Fe multilayers with Cr. Physical Review B - Condensed Matter and Materials Physics, 66(13), 1-7.
http://dx.doi.org/10.1103/PhysRevB.66.134405
---------- CHICAGO ----------
Milano, J., Llois, A.M., Steren, L.B. "Combined impurity and band effects on the appearance of inverse giant magnetoresistance in Cu/Fe multilayers with Cr" . Physical Review B - Condensed Matter and Materials Physics 66, no. 13 (2002) : 1-7.
http://dx.doi.org/10.1103/PhysRevB.66.134405
---------- MLA ----------
Milano, J., Llois, A.M., Steren, L.B. "Combined impurity and band effects on the appearance of inverse giant magnetoresistance in Cu/Fe multilayers with Cr" . Physical Review B - Condensed Matter and Materials Physics, vol. 66, no. 13, 2002, pp. 1-7.
http://dx.doi.org/10.1103/PhysRevB.66.134405
---------- VANCOUVER ----------
Milano, J., Llois, A.M., Steren, L.B. Combined impurity and band effects on the appearance of inverse giant magnetoresistance in Cu/Fe multilayers with Cr. Phys. Rev. B Condens. Matter Mater. Phys. 2002;66(13):1-7.
http://dx.doi.org/10.1103/PhysRevB.66.134405