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Theory of carrier mediated ferromagnetism in dilute magnetic oxides

TitleTheory of carrier mediated ferromagnetism in dilute magnetic oxides
Publication TypeJournal Article
Year of Publication2007
AuthorsM. J. Calderón, and S. Das Sarma
JournalAnnals of Physics
Volume322
Pagination2618–2634
Date Publishednov
ISSN00034916
Keywords2007, 75.10.−b, 75.30.hx, 75.50.pp, Single Fellow
Abstract

We analyze the origin of ferromagnetism as a result of carrier mediation in diluted magnetic oxide semiconductors in the light of the experimental evidence reported in the literature. We propose that a combination of percolation of magnetic polarons at lower temperature and Ruderman–Kittel–Kasuya–Yosida ferromagnetism at higher temperature may be the reason for the very high critical temperatures measured (up to ∼700 K).

URLhttp://dx.doi.org/10.1016/j.aop.2007.01.010