Title variants
Languages of publication
Abstracts
A band electron interacting with N electrons in a d-shell of a paramagnetic impurity in zinc-blende type semiconductors was considered. The hybridization of band and d-states in the crystal field and the nonorthogonality mechanisms of interaction were examined in addition to the standard direct exchange. The Heisenberg-type form was derived for the interaction between a Γ_8-electron and an impurity with a half-filled d-shell. The domination of the hybridization mechanism explains the observed sign of the effective exchange constant for Γ_8 electrons in diluted magnetic semiconductors (DMS) and the difference in magnitude of this constant for Mn^{2+} and Fe^{3+} ions in HgSe.
Discipline
- 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)
- 75.50.Pp: Magnetic semiconductors
- 71.70.-d: Level splitting and interactions(see also 73.20.-r Surface and interface electron states; 75.30.Et Exchange and superexchange interactions)
Journal
Year
Volume
Issue
Pages
145-148
Physical description
Dates
published
1991-01
received
1990-08-08
Contributors
author
- Institute of Theoretical Physics, Warsaw University, ul. Hoża 69, 00-681 Warsaw, Poland
author
- Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv79z116kz