The Correlated Kondo-lattice Model
J. Kienert, C. Santos, and W. Nolting
TL;DR
This paper studies the ferromagnetic Kondo-lattice model with correlated conduction electrons, introducing a moment conserving approach to analyze electronic and magnetic properties, revealing effects like Hubbard peaks and changes in magnetic stability.
Contribution
It presents a novel moment conserving method for the FKLM with correlations and self-consistently calculates magnetic ordering and quasiparticle densities of states.
Findings
Presence of an upper Hubbard peak in QDOS
Modification of magnetic stability due to band interactions
Calculation of Curie temperature with correlations
Abstract
We investigate the ferromagnetic Kondo-lattice model (FKLM) with a correlated conduction band. A moment conserving approach is proposed to determine the electronic self-energy. Mapping the interaction onto an effective Heisenberg model we calculate the ordering of the localized spin system self-consistently. Quasiparticle densities of states (QDOS) and the Curie temperature are calculated. The band interaction leads to an upper Hubbard peak and modifies the magnetic stability of the FKLM.
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