Theory of the magnetic polaron

Sriram Shastry, B. ; Mattis, D. C. (1981) Theory of the magnetic polaron Physical Review B: Condensed Matter and Materials Physics, 24 (9). pp. 5340-5348. ISSN 1098-0121

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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.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:50818
Deposited On:26 Jul 2011 14:04
Last Modified:18 May 2016 04:59

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