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Ferromagnetism in the Strong Hybridization Regime of the Periodic Anderson Model

C. D. Batista·J. Bonča·J. E. Gubernatis
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Abstract

We determine exactly the ground state of the one-dimensional periodic Anderson model (PAM) in the strong hybridization regime. In this regime, the low energy sector of the PAM maps into an effective Hamiltonian that has a ferromagnetic ground state for any electron density between half and three quarters filling. This rigorous result proves the existence of a new magnetic state that was excluded in the previous analysis of the mixed valence systems.

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C. D. Batista, J. Bonča, J. E. Gubernatis. 2003-07-31. Ferromagnetism in the Strong Hybridization Regime of the Periodic Anderson Model. https://doi.org/10.1103/physrevb.68.064403

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