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Unraveling the effect of oxygen on the magnetic map of Fe/Cr multilayers

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  • Salvador Meza-Aguilar

    (Facultad de Ciencias Físico-Matemáticas de la Universidad Autónoma de Sinaloa, Av. Las Americas y Blvd. Universitarios, Colonia Universitaria)

  • Claude Demangeat

    (UFR de Physique et d’Ingénierie, 3 rue de l’Université)

Abstract

Recent experimental results have depicted a strong modification of the magnetic map when oxygen is added to Fe/Cr multilayers. Within ab initio DFT + U code we show that the Fe/O/Cr/Fe(001) semi-infinite system is unstable whereas oxygen tends to move on top of the Fe atomic layer. Focuss is therefore made on the O/Fe/Cr/Fe(001) semi-infinite slab which displays an interlayer exchange coupling different from the classical case when O is absent. The effect of the oxygen adsorbed layer is to alter strongly the local density of states on the Fe atoms: this can explain the modification of the interlayer exchange coupling. Both DFT-only and DFT + U approaches are investigated in order to point out the major effect of U on the magnetic polarization. Graphical abstract

Suggested Citation

  • Salvador Meza-Aguilar & Claude Demangeat, 2020. "Unraveling the effect of oxygen on the magnetic map of Fe/Cr multilayers," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 93(6), pages 1-4, June.
    • Handle: RePEc:spr:eurphb:v:93:y:2020:i:6:d:10.1140_epjb_e2020-10043-4
    DOI: 10.1140/epjb/e2020-10043-4
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    Solid State and Materials;

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