Stabilization of magnetic polarons in antiferromagnetic semiconductors by extended spin distortions

J. Castro, I. González () and D. Baldomir

The European Physical Journal B: Condensed Matter and Complex Systems, 2004, vol. 39, issue 4, 447-451

Abstract: We study the problem of a magnetic polaron in an one-dimensional antiferromagnetic semiconductor (ferron). We obtain an analytical solution for the distortion produced in the antiferromagnetic structure due to the presence of a charge carrier bound to an impurity. The region in which the charge carrier is trapped is of the order of the lattice constant (small ferron) but the distortion of the magnetic structure extends over a much larger distance. It is shown that the presence of this distortion makes the ferron more stable, and introduces a new length scale in the problem. Copyright Springer-Verlag Berlin/Heidelberg 2004

Date: 2004
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DOI: 10.1140/epjb/e2004-00216-8

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