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Discrete Layer-by-Layer Magnetic Switching in Fe/MgO(001) Superlattices
Uppsala University. Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
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2016 (English)In: Physical Review Applied, ISSN 2331-7019, Vol. 5, no 044011Article in journal (Refereed) Published
Abstract [en]

We report on a discrete layer-by-layer magnetic switching in Fe=MgO superlattices driven by anantiferromagnetic interlayer exchange coupling. The strong interlayer coupling is mediated by tunnelingthrough MgO layers with thicknesses up to at least 1.8 nm, and the coupling strength varies with MgOthickness. Furthermore, the competition between the interlayer coupling and magnetocrystalline anisotropystabilizes both 90° and 180° periodic alignment of adjacent layers throughout the entire superlattice. Thetunable layer-by-layer switching, coupled with the giant tunneling magnetoresistance of Fe=MgO=Fejunctions, is an appealing combination for three-dimensional spintronic memories and logic devices.

Place, publisher, year, edition, pages
American physical society , 2016. Vol. 5, no 044011
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-128109DOI: 10.1103/PhysRevApplied.5.044011ISI: 000374562100001OAI: oai:DiVA.org:liu-128109DiVA: diva2:928982
Note

Funding agencies: Swedish research council (VR); Knut and Alice Wallenberg Foundation (KAW)

Available from: 2016-05-17 Created: 2016-05-17 Last updated: 2016-06-10

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