A new type of bound magnetic polaron state: the formation of long-range spin distortions

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dc.creatorOgarkov, S. L.
dc.creatorKagan, M. Yu.
dc.creatorSboychakov, A. O.
dc.creatorRakhmanov, A. L.
dc.creatorKugel, K. I.
dc.date2006-03-29
dc.date2006-07-19
dc.date.accessioned2026-07-07T07:05:05Z
dc.date.available2026-07-07T07:05:05Z
dc.descriptionThe structure of bound magnetic polarons in an antiferromagnetic matrix is studied in the framework of two-dimensional (2D) and three-dimensional (3D) Kondo-lattice models in the double exchange limit (J_H >> t). The conduction electron is bound by a nonmagnetic donor impurity and forms a ferromagnetic core of the size about the electron localization length (bound magnetic polaron). We find that the magnetic polaron produces rather long-range extended spin distortions of the antiferromagnetic background around the core. In a wide range of distances, these distortions decay as 1/r^2 and 1/r^4 in 2D and 3D cases, respectively. In addition, the magnetization of the core is smaller than its saturation value. Such a magnetic polaron state is favorable in energy in comparison to usually considered one (saturated core without extended distortions).
dc.description7 pages, 5 figures, submitted to Phys. Rev. B; v.2 contains the changes introduced according to comments of the PRB Referees
dc.identifierhttps://arxiv.org/abs/cond-mat/0603798
dc.identifierhttp://arxiv.org/abs/cond-mat/0603798
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109556
dc.subjectStrongly Correlated Electrons
dc.titleA new type of bound magnetic polaron state: the formation of long-range spin distortions
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