INDIRECT EXCHANGE IN BAND-INVERTED HETEROJUNCTIONS OF IV-VI-SEMIMAGNETIC COMPOUNDS

The interaction of spins localized within the band-inverted heterojunc tion with the Weyl excitations is shown to differ significantly from t he usual s-d interaction. The indirect exchange interaction is long-ra nge and antiferromagnetic. The magnitude of interaction decreases with the distance as R-3. The effective interaction depends on the paramet ers of electron energy spectrum and parameters of the heterojunction a s well. It consists of anisotropic Heisenberg term and of pseudodipole terms.