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Disorder‐induced local magnetic moments in weakly correlated metallic systems
Author(s) -
Langenfeld Annette,
Wölfle Peter
Publication year - 1995
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19955070106
Subject(s) - magnetic moment , condensed matter physics , anderson impurity model , kondo effect , physics , kondo insulator , diagonal , distribution (mathematics) , electron , quantum mechanics , mathematical analysis , geometry , mathematics
We consider the formation and the Kondo effect of local magnetic moments in the Anderson‐Hubbard model with off‐diagonal disorder. The existence of moments at sites weakly coupled to the environment is deduced in effective medium approximation. The distribution of moments is calculated both deep in the metallic phase and near the metal‐insulator transition. We discuss the Kondo quenching of the moments and derive a distribution of local Kondo temperatures.