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Following the work of Schrieffer, Wen, and Zhang on the ``spin-bag'' mechanism we study the formation of magnetic polarons in the two-dimensional Hubbard model in the Hartree-Fock approximation. The profile and effective mass of the polarons are caclulated for various U over t ratios. The static potential between two polarons is presented for various spin and charge configurations. The effect of the nearest-neighbor repulsion is also considered. The relevance of the results to high-Tc superconductivity is discussed.
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Su et al. (1988) studied this question.
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