Biperiodic oscillatory coupling with the thickness of an embedded Ni layer in Co/Cu/Co/Ni/Co (100) and selection rules for the periods

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

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Abstract

A biperiodic oscillation of the strength of the antiferromagnetic interlayer coupling as a function of the thickness of an embedded Ni layer has been observed in an epitaxial Cu(100)/Co/Cu/Co/Ni/Co sample with the Cu interlayer and the Ni layer in the form of wedges. As the effect originates from Bloch-wave interference in the Ni layer, the observed periods must be, and indeed can be, related to extremal spanning vectors of the spin-resolved Ni Fermi surface. The experiment touches on the selection criteria for spanning vectors of Ni that determine the periods of the oscillations.
Original languageEnglish
Pages (from-to)R748-R751
Number of pages4
JournalPhysical Review B: Condensed Matter
Volume54
Issue number2
DOIs
Publication statusPublished - 1996

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