Magnetotransport of manganite superlattices: Investigating the role of a magnetic insulating spacer

D. Niebieskikwiat, L. E. Hueso, N. D. Mathur, M. B. Salamon

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

9 Citas (Scopus)

Resumen

Magnetotransport data are presented for a set of manganite superlattices comprising La2/3 Sr1/3 MnO3 as the ferromagnetic (FM) metallic layers (thickness 11.9 nm) and Pr2/3 Ca1/3 MnO3 as the antiferromagnetic insulating spacer (IS) with thicknesses tIS between 0.8 and 7.6 nm. Previous studies on this system showed the presence of FM inclusions within the IS, with a notable magnetization peak at tIS ∼3 nm. Now, we show that this peak is also accompanied by a maximum in the magnetoresistance (MR). Moreover, the MR data of all the samples scale in a single curve, MR∝ MIS 2, where MIS is the magnetization of the IS. These results provide a quantitative demonstration of the feasibility to improve the response of engineered MR devices by including magnetically active IS instead of the usual nonmagnetic compounds.

Idioma originalInglés
Número de artículo123120
PublicaciónApplied Physics Letters
Volumen93
N.º12
DOI
EstadoPublicada - 2008

Huella

Profundice en los temas de investigación de 'Magnetotransport of manganite superlattices: Investigating the role of a magnetic insulating spacer'. En conjunto forman una huella única.

Citar esto