Magnetism in the dilute Kondo lattice model

Details Magnetism in the dilute Kondo lattice model Magnetism in the dilute Kondo lattice model

2003-04-15

arxiv.org/abs/cond-mat/0304351v1

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 2 figures

Scientific paper

10.1103/PhysRevB.69.174425

The one dimensional dilute Kondo lattice model is investigated by means of bosonization for different dilution patterns of the array of impurity spins. The physical picture is very different if a commensurate or incommensurate doping of the impurity spins is considered. For the commensurate case, the obtained phase diagram is verified using a non-Abelian density-matrix renormalization-group algorithm. The paramagnetic phase widens at the expense of the ferromagnetic phase as the $f$-spins are diluted. For the incommensurate case, antiferromagnetism is found at low doping, which distinguishes the dilute Kondo lattice model from the standard Kondo lattice model.

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