Static versus dynamical mean-field theory of Mott antiferromagnets (Articolo in rivista)

Type
Label
  • Static versus dynamical mean-field theory of Mott antiferromagnets (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sangiovanni, G; Toschi, A; Koch, E; Held, K; Capone, M; Castellani, C; Gunnarsson, O; Mo, SK; Allen, JW; Kim, HD; Sekiyama, A; Yamasaki, A; Suga, S; Metcalf, P (2006)
    Static versus dynamical mean-field theory of Mott antiferromagnets
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sangiovanni, G; Toschi, A; Koch, E; Held, K; Capone, M; Castellani, C; Gunnarsson, O; Mo, SK; Allen, JW; Kim, HD; Sekiyama, A; Yamasaki, A; Suga, S; Metcalf, P (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany; KFA Julich GmbH, Forschungszentrum, Inst Festkorperforsch, D-52425 Julich, Germany; CNR, Ist Sistemi Complessi, I-00185 Rome, Italy; INFM, SMC, I-00185 Rome, Italy; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy; Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA; Pohang Accelerator Lab, Pohang 790784, South Korea; Osaka Univ, Grad Sch Engn, Dept Mat Phys, Toyonaka, Osaka 5608531, Japan; Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA (literal)
Titolo
  • Static versus dynamical mean-field theory of Mott antiferromagnets (literal)
Abstract
  • Studying the antiferromagnetic phase of the Hubbard model by dynamical mean-field theory, we observe striking differences with static (Hartree-Fock) mean field: The Slater band is strongly renormalized and spectral weight is transferred to spin-polaron sidebands. Already for intermediate values of the interaction U the overall bandwidth is larger than in the Hartree-Fock mean field and the gap is considerably smaller. Such differences survive any renormalization of U. Our photoemission experiments for Cr-doped V2O3 show spectra qualitatively well described by dynamical mean-field theory. (literal)
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