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arXiv · 1606.04727

The generalized Kondo lattice model and its spin-polaron implementation for cuprates by projection method

V. V. Val'kov·D. M. Dzebisashvili·A. F. Barabanov
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Abstract

It is shown that the spin-fermion model found to be an effective low-energy implementation of the three-band Emery model after Wannier transformation of $p_x$- and $p_y$-orbitals in the oxygen ions subsystem is reduced to the generalized Kondo lattice model. Its essential feature is the presence of spin-correlated hoppings of the current carriers between distant cells. Numerical calculations of the spin-polaron spectrum demonstrate the important role of the distant hoppings.

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V. V. Val'kov, D. M. Dzebisashvili, A. F. Barabanov. 2016-06-15. The generalized Kondo lattice model and its spin-polaron implementation for cuprates by projection method. https://arxiv.org/abs/1606.04727

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