Theory of the magnetic polaron
- 1 November 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 24 (9), 5340-5348
- https://doi.org/10.1103/physrevb.24.5340
Abstract
We construct exact Green's functions for a single electron in a ferromagnetic semiconductor, including both spin-conserving and spin-flip processes at . We contrast two cases: ferromagnetic and antiferromagnetic coupling of the electron's spin to the lattice. In the former case, a small- electron will have its spin totally polarized in the predominant direction, whereas in the latter, deviation from saturation polarization is to be expected. Crucial differences between bound- and scattering-state contributions to the electron's spectral weight are highlighted.
Keywords
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