Selective Mott Physics as a Key to Iron Superconductors (Articolo in rivista)

Type
Label
  • Selective Mott Physics as a Key to Iron Superconductors (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.112.177001 (literal)
Alternative label
  • de' Medici, Luca; Giovannetti, Gianluca; Capone, Massimo (2014)
    Selective Mott Physics as a Key to Iron Superconductors
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • de' Medici, Luca; Giovannetti, Gianluca; Capone, Massimo (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 112 (literal)
Rivista
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  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 17 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Centre National de la Recherche Scientifique (CNRS); Centre National de la Recherche Scientifique (CNRS); European Synchrotron Radiat Facil; Consiglio Nazionale delle Ricerche (CNR); International School for Advanced Studies (literal)
Titolo
  • Selective Mott Physics as a Key to Iron Superconductors (literal)
Abstract
  • We show that electron- and hole-doped BaFe2As2 are strongly influenced by a Mott insulator that would be realized for half-filled conduction bands. Experiments show that weakly and strongly correlated conduction electrons coexist in much of the phase diagram, a differentiation which increases with hole doping. This selective Mottness is caused by the Hund's coupling effect of decoupling the charge excitations in different orbitals. Each orbital then behaves as a single-band doped Mott insulator, where the correlation degree mainly depends on how doped is each orbital from half filling. Our scenario reconciles contrasting evidences on the electronic correlation strength, implies a strong asymmetry between hole and electron doping, and establishes a deep connection with the cuprates. (literal)
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