Abstract

The relationship of the growth and structure of highly oriented (111) Co/Cu superlattices to their magnetotransport properties is discussed. To eliminate changes in growth parameters between different samples, wedged superlattice structures were prepared in which uniform Co layers are separated by Cu layers whose thickness is varied by more than a factor of 2 across the substrate. Smooth variations in magnetoresistance (MR) as a function of Cu-layer thickness were obtained. No evidence for oscillations in MR was found with the exception of a peak in MR for thin Cu layers centered at about 10 A

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