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MAGNETORESISTENCIA TUNEL EN JUNTURAS CON MANGANITAS TUNNELING
MAGNETORESISTANCE IN MANGANITE-BASED JUNCTIONS
Keywords:
Manganitas, junturas magnéticas tipo túnel, magnetoresistencia túnel, half-metallicity. (es)Manganites, magnetic tunneling junctions, tunneling magnetoresistance, half-metallicity. (en)
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Este artículo revisa la magnetoresistencia túnel (MRT) de junturas magnéticas, particularmente de aquellas construidas usando manganitas. Son presentados el origen de este tipo de tunelamiento y su dependencia con el material, el método de crecimiento de la juntura y la temperatura. El artículo es complementado con la discusión de algunos resultados sobre la influencia de la medio-metalicidad y de las intercaras en la MRT.
This paper reviews the tunnelling magnetoresistance (TMR) of magnetic tunneling junctions, particulary of those made of manganites. The origin of this type of tunneling and its dependence on the material, the growing method and the temperature are presented. Besides, some results on the influence of the half-metallicity and of the interfaces on the TMR are discussed.
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