Journal ArticleDOI
Electronic Theory of Mn - Alloyed Diluted Magnetic Semiconductors
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In this paper, the electronic structure and magnetic interactions in Mn-alloyed II-VI diluted magnetic semiconductors (DMS) are summarized using an empirical tight-binding, coherent potential approximation approach with input from experiment and local spin density band calculations.Abstract:
Recent calculations of the electronic structure and magnetic interactions in Mn - alloyed II-VI diluted magnetic semiconductors (DMS) are summarized. Detailed band structure results are obtained using an empirical tight-binding, coherent potential approximation approach with input from experiment and local spin density band calculations. The dominant magnetic interactions in these systems result from hybridization between spin-split Mn d states and sp valence bands. Superexchange between Mn moments is well described by a simple three-level model which yields accurate Mn - Mn exchange constants for a variety of II-VI DMS as well as the rocksalt insulators MnO and α-MnS.read more
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Semimagnetic semiconductors in high magnetic fields
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References
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Journal ArticleDOI
A local exchange-correlation potential for the spin polarized case: I
U von Barth,L Hedin +1 more
TL;DR: In this article, a spin dependent one-electron potential pertinent to ground state properties is obtained from calculations of the total energy per electron made with a 'bubble' (or random phase) type of dielectric function.
Journal ArticleDOI
Relation between the Anderson and Kondo Hamiltonians
J. R. Schrieffer,P. A. Wolff +1 more
TL;DR: In this article, a canonical transformation is used to relate the Anderson model of localized magnetic moment in a dilute alloy to that of Kondo, and the two models are shown to be equivalent.