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This document discusses ferromagnetism in Kondo lattice systems. It explains that in one dimension, the Kondo lattice model exhibits a larger ferromagnetic phase than expected in higher dimensions due to the absence of Kondo-RKKY competition. At very high exchange coupling J, the model can be mapped to a half-filled Hubbard model which is known to exhibit Nagaoka ferromagnetism at low densities, explaining the ferromagnetic behavior. Crude variational descriptions of the Kondo lattice model also allow for m

Author

Supriya

Language

EN