A local moment approach to the gapped Anderson model

We develop a non-perturbative local moment approach (LMA) for the gapped Anderson impurity model (GAIM), in which a locally correlated orbital is coupled to a host with a gapped density of states. Two distinct phases arise, separated by a level-crossing quantum phase transition: a screened singlet p...

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Detalhes bibliográficos
Principais autores: Galpin, MR, Logan, D
Formato: Journal article
Idioma:English
Publicado em: 2008