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1996 | 90 | 4 | 731-734
Article title

Double Exchange in Mixed-Valency Diluted Magnetic Semiconductors

Content
Title variants
Languages of publication
EN
Abstracts
EN
The role of double-exchange, a non-Heisenberg spin-spin interaction between the magnetic ions of identical chemical nature but different charge states, in the mixed-valency diluted magnetic semiconductors is discussed. The mechanism correlates the spins of magnetic ions by virtual hopping of a d-electron from one ion to the other via the p-band states. We calculate the energy spectrum for pairs of magnetic ions within the charged ionic clusters stabilized by the charge-charge correlations, taking into account simultaneously both the double and the superexchange. The ferromagnetic, non-Heisenberg double exchange might compete with the Heisenberg-like, ferrimagnetic superexchange, thus resulting in canted alignments of ionic spins.
Keywords
EN
Year
Volume
90
Issue
4
Pages
731-734
Physical description
Dates
published
1996-10
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv90z415kz
Identifiers
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