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Entropy of fermionic models on highly frustrated lattices

Spinless fermions on highly frustrated lattices are characterized by the lowest single-particle band which is completely flat. Concrete realizations are provided by the sawtooth chain and the kagom'e lattice. For these models a real-space picture is given in terms of localized states. Furthermore, w...

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Autori principali: A.Honecker, J.Richter
Natura: Artigo
Lingua:Inglês
Pubblicazione: Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine 2005-01-01
Serie:Condensed Matter Physics
Soggetti:
flat band
localized states
frustrated lattice
spinless fermions
Hubbard model
magnetocaloric effect
Accesso online:http://dx.doi.org/10.5488/CMP.8.4.813
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