Critical conditions for 1D, 2D and 3D magnetic-bipolaron formation
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Interaction of two magnetic polarons formed either by single carriers or by excitons is considered in bulk crystal, quantum well and quantum wire. It is shown that the magnetic bipolaron can be formed if the distance between two polarons is less than some critical value. This critical radius is the larger the lower the dimensionality of the system, the lower the temperature and the larger the single-polaron radius. The critical distance for the neutral-magnetic-bipolaron formation is much longer than for the charged bipolaron.
PACS 75.30.EtExchange and superexchange interactions
PACS 75.50.PpMagnetic semiconductors
PACS 78.66.HfII–VI semiconductors
PACS 01.30.CcConference proceedings
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