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VOLUME 74 (2001) | ISSUE 8 | PAGE 472
Magnetic polarons (ferrons) of complicated structure
PACS: 75.30.Vn, 75.50.Pp
Abstract
So far magnetic polarons in antiferromagnetic semiconductors (ferrons) were assumed to arise due to the charge carrier self-trapping by a ferromagnetic or canted antiferromagnetic region. If the ferron size is not very large, they should have much more complicated structure: the magnetically deformed region consists not only of a magnetized core, which traps the electron, but also of its surrounding with the oppositely directed total moment, which repulses the trapped electron. The compensating moment of the surrounding oscillates with a period of doubled lattice constant and with the amplitude diminishing very smoothly, on increase in the distance from the core.