Phase Diagram of the 1D Kondo Lattice Model

I. P. McCulloch; M. Gulacsi; S. Caprara; A. Juozapavicius

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Phase Diagram of the 1D Kondo Lattice Model

I. P. McCulloch·M. Gulacsi·S. Caprara·A. Juozapavicius

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Abstract

We determine the boundary of the fully polarized ferromagnetic ground state in the one dimensional Kondo lattice model at partial conduction electron band filling by using a newly developed infinite size DMRG method which conserves the total spin quantum number. The obtained paramagnetic to ferromagnetic phase boundary is below $J \approx 3.5$ for the whole range of band filling. By this we solve the controversy in the phase diagram over the extent of the ferromagnetic region close to half filling.

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I. P. McCulloch, M. Gulacsi, S. Caprara, A. Juozapavicius. 1999-08-27. Phase Diagram of the 1D Kondo Lattice Model. https://arxiv.org/abs/cond-mat/9908414

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