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28 March 2024
 
  » arxiv » cond-mat/0606762

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Relevance of quantum fluctuations in the Anderson-Kondo model
Robert Peters ; Thomas Pruschke ; PostScript ; PDF ; Other formats ;
Date 29 Jun 2006
Subject Strongly Correlated Electrons
AbstractWe 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$_3$ 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.
Source arXiv, cond-mat/0606762
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