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Interlayer exchange coupling and giant magnetoresistance in Fe/V (001) superlattices

A. Broddefalk·R. Mathieu·P. Nordblad·P. Blomqvist·R. Wäppling·J. Lu·E. Olsson
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Abstract

Magnetization and magnetoresistivity studies of Fe/V (001) superlattices are reported. The first giant magnetoresistance peak with respect to the vanadium and iron layer thicknesses is investigated. The interlayer antiferromagnetic coupling strength is found to show a peak at a vanadium layer thickness of 13 atomic monolayers ($\approx$ 20 Å) with a full width at half maximum of about 2 monolayers. The antiferromagnetic coupling shows a maximum at an iron layer thickness of about 6 monolayers ($\approx$ 9 Å) for series of superlattices with vanadium thicknesses around 13 monolayers. The magnitude of the giant magnetoresistance shows a similar variation as the antiferromagnetic coupling strength.

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A. Broddefalk, R. Mathieu, P. Nordblad, P. Blomqvist, R. Wäppling, J. Lu, E. Olsson. 2001-11-14. Interlayer exchange coupling and giant magnetoresistance in Fe/V (001) superlattices. https://doi.org/10.1103/physrevb.65.214430

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