Phys. Rev. B 24, 5340–5348 (1981)Theory of the magnetic polaronReceived 25 March 1981; published in the issue dated 1 November 1981 We construct exact Green's functions for a single electron in a ferromagnetic semiconductor, including both spin-conserving and spin-flip processes at T=0. We contrast two cases: ferromagnetic and antiferromagnetic coupling of the electron's spin to the lattice. In the former case, a small-k 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. © 1981 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.24.5340
DOI:
10.1103/PhysRevB.24.5340
PACS:
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