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1995 | 87 | 2 | 539-542
Article title

Superexchange in A^{II}B^{VI} Diluted Magnetic Semiconductors with Mn, Fe and Co Ions

Content
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Languages of publication
EN
Abstracts
EN
A theory of superexchange, the dominant ion-ion spin interaction, for Mn-, Fe- and Co-based DMS is presented. The theory takes into account the band structure of A^{II}B^{VI} compounds, the orbital dependence of the hybridization and the intra shell correlations of the d-electrons, which are essential in the case of the non-S-state ions. The general formulae relating the superexchange to the band structure and the ionic energy spectrum were obtained - the dominant part of the superexchange turns out to be inversely proportional to the square of the ionic spin. This explains the observed in­crease in the average values of d-d exchange constants, when passing from Mn via Fe to Co ions in DMS.
Keywords
EN
Year
Volume
87
Issue
2
Pages
539-542
Physical description
Dates
published
1995-02
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv87z257kz
Identifiers
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