Abstract
We determine the bounday of the fully polarized ferromagnetic states 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 numbers. The obtained paramagnetic to ferromagnetic phase bounday is bellow J ≍ 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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McCulloch, I.P., Gulacsi, M., Caprara, S. et al. Phase diagram of the 1D Kondo lattice model. Journal of Low Temperature Physics 117, 323–328 (1999). https://doi.org/10.1023/A:1022557314114
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DOI: https://doi.org/10.1023/A:1022557314114