The nature and validity of the RKKY limit of exchange coupling in magnetic trilayers
نویسنده
چکیده
The effects on the exchange coupling in magnetic trilayers due to the presence of a spin-independent potential well are investigated. It is shown that within the RKKY theory no bias nor extra periods of oscillation associated with the depth of the well are found, contrary to what has been claimed in recent works. The range of validity of the RKKY theory is also discussed. PACS numbers 75.70.Fr, 75.30.Et, 75.50.Rr Typeset using REVTEX ∗Permanent address: Instituto de F́ısica, Universidade Federal Fluminense.
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