Indirect Exchange in Band-Inverted Heterojunctions of IV-VI Semimagnetic Compounds |
| V.K. Dugaev, V.I. Litvinov Chernovtsy Department of the Institute of Materials Science Problems, Ukrainian Academy of Sciences, I. Wilde 5, 274001 Chernovtsy, Ukraine and M. Oszwałdowski Technical University of Poznań, Piotrowo 3, 60-965 Poznań, Poland |
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| The interaction of spins localized within the band-inverted heterojunction with the Weyl excitations is shown to differ significantly from the usual s-d interaction. The indirect exchange interaction is long-range and anti-ferromagnetic. The magnitude of interaction decreases with the distance as R-3. The effective interaction depends on the parameters of electron energy spectrum and parameters of the heterojunction as well. It consists of anisotropic Heisenberg term and of pseudodipole terms. |
| DOI: 10.12693/APhysPolA.84.709 PACS numbers: 73.20.Dx, 75.30.Et, 75.30.Hx |