Ms. Ferreira et al., THE NATURE AND VALIDITY OF THE RKKY LIMIT OF EXCHANGE COUPLING IN MAGNETIC TRILAYERS, Journal of physics. Condensed matter, 6(40), 1994, pp. 120000619-120000623
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 or extra periods of oscillat
ion 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 th
eory is also discussed.