Journal
JETP LETTERS
Volume 87, Issue 9, Pages 482-488Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0021364008090075
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Ferromagnetism in a layer of magnetic impurity atoms indirectly interacting through a quasi-two-dimensional conduction channel in the nearest quantum well is considered in the mean-field model. The interaction appears through the RKKY mechanism due to the extension of the wavefunction of charge carriers localized in a model triangular well to the region where the impurities are localized. The Curie temperature and its dependence on the carrier density in the well and well depth are determined. The results are compared with the experimental data concerning the structures based on the diluted magnetic semiconductors Ca1-x Mn (x) As.
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