Relevance of quantum fluctuations in the Anderson-Kondo model
Strongly Correlated Electrons
2007-05-23 v1
Abstract
We study a localized spin coupled to an Anderson impurity to model the situation found in higher transition metal or rare earth compounds like e.g.\ LaMnO or Gd monopnictides. We find that, even for large quantum numbers of the localized spin, quantum fluctuations play an essential role for the case of ferromagnetic coupling between the spin and the impurity levels. For antiferromagnetic coupling, a description in terms of a classical spin is appropriate.
Keywords
Cite
@article{arxiv.cond-mat/0606762,
title = {Relevance of quantum fluctuations in the Anderson-Kondo model},
author = {Robert Peters and Thomas Pruschke},
journal= {arXiv preprint arXiv:cond-mat/0606762},
year = {2007}
}