Theory of carrier mediated ferromagnetism in dilute magnetic oxides |
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Authors: | MJ Calderón S Das Sarma |
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Institution: | Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, MD 20742-4111, USA |
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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). |
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Keywords: | 75 50 Pp 75 30 Hx 75 10 &minus b |
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