Exchange coupling between magnetic layers across non-magnetic superlattices

Details Exchange coupling between magnetic layers across non-magnetic superlattices Exchange coupling between magnetic layers across non-magnetic superlattices

1997-05-30

arxiv.org/abs/cond-mat/9705310v2

Physics

Condensed Matter

13 pages; 5 figures; To appear in J. Phys.: Cond. Matter

Scientific paper

10.1088/0953-8984/9/31/018

The oscillation periods of the interlayer exchange coupling are investigated when two magnetic layers are separated by a metallic superlattice of two distinct non-magnetic materials. In spite of the conventional behaviour of the coupling as a function of the spacer thickness, new periods arise when the coupling is looked upon as a function of the number of cells of the superlattice. The new periodicity results from the deformation of the corresponding Fermi surface, which is explicitly related to a few controllable parameters, allowing the oscillation periods to be tuned.

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