Magnetic layer thickness dependence of the interlayer exchange coupling in (001) Co/Cu/Co

P. J.H. Bloemen, M. T. Johnson, M.T.H. van de Vorst, R. Coehoorn, J. J. de Vries, R. Jungblut, J. aan de Stegge, A. Reinders, W. J.M. de Jonge

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Abstract

A dependence of the strength of the antiferromagnetic coupling across Cu on the Co layer thickness has been observed in an epitaxial fcc (001) triple wedge sample containing two Co wedges and one Cu wedge. Our result is consistent with an oscillation period of 67 Coa value that agrees with the period of 3.5 monolayers of Co derived from the extremal wave vector that spans the ellipsoidal hole pocket centered at the X point of the fcc Co spin-down Fermi surface. This shows that the interlayer exchange coupling does not just involve an interaction localized at the interfaces, but is a property of the sandwich as a whole.

Original languageEnglish
Pages (from-to)764-767
Number of pages4
JournalPhysical Review Letters
Volume72
Issue number5
DOIs
Publication statusPublished - 1 Jan 1994

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    Bloemen, P. J. H., Johnson, M. T., van de Vorst, M. T. H., Coehoorn, R., de Vries, J. J., Jungblut, R., aan de Stegge, J., Reinders, A., & de Jonge, W. J. M. (1994). Magnetic layer thickness dependence of the interlayer exchange coupling in (001) Co/Cu/Co. Physical Review Letters, 72(5), 764-767. https://doi.org/10.1103/PhysRevLett.72.764