The RKKY Coupling of Two Magnetically Doped Monolayers in Thin Films
K. Szałowski and T. Balcerzak
Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland
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Received: 7 06 2008;
The Gauss-type exchange contact potential is applied to derive the Ruderman-Kittel-Kasuya-Yosida interaction in thin films. The interlayer magnetic coupling energies and the critical Curie/Néel temperatures are calculated. The quantum size effects are found to cause long-range oscillatory behavior of these quantities vs. film thickness, with the period much longer than the usual RKKY characteristic oscillations.
DOI: 10.12693/APhysPolA.114.1375
PACS numbers: 75.30.-m, 75.50.-y, 75.70.-i