Localized spin ordering in Kondo lattice models
Strongly Correlated Electrons
2009-11-07 v1
Abstract
Using a non-Abelian density matrix renormalization group method we determine the phase diagram of the Kondo lattice model in one dimension, by directly measuring the magnetization of the ground-state. This allowed us to discover a second ferromagnetic phase missed in previous approaches. The phase transitions are found to be continuous. The spin-spin correlation function is studied in detail, and we determine in which regions the large and small Fermi surfaces dominate. The importance of double-exchange ordering and its competition with Kondo singlet formation is emphasized in understanding the complexity of the model.
Cite
@article{arxiv.cond-mat/0111355,
title = {Localized spin ordering in Kondo lattice models},
author = {I. P. McCulloch and A. Juozapavicius and A. Rosengren and M. Gulacsi},
journal= {arXiv preprint arXiv:cond-mat/0111355},
year = {2009}
}
Comments
Revtex, 4 pages, 4 eps figures embedded