Author:
Nakagawa Naoyuki,Lippmaa Mikk,Shibuya Keisuke,Koinuma Hideomi,Kawasaki Masashi
Abstract
We show that it is possible to grow fractional-layer oxide superlattices by
embedding periodic layers of antiferromagnetic
La0.6Sr0.4FeO3 nanodots or nanowires in a
ferromagnetic La0.6Sr0.4MnO3 thin film. The
fractional-layer superlattices were used to study spin canting effects at the
nanostructure interfaces. The transport properties of the superlattices were shown to
have a strong dependence on the nanodot size and density. A magnetic field-induced
metal to insulator transition was observed when 25 nm nanodots were separated by
three monolayers of La0.6Sr0.4MnO3. A very large
magnetoresistance effect was observed below the ferromagnetic ordering temperature of
the La0.6Sr0.4MnO3 film.
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
4 articles.
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