Journal Article

PreJuSER-52189

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Static versus dynamical mean-field theory of Mott antiferromagnets

Sangiovanni, G. ; Toschi, A. ; Koch, E.FZJ* ; Held, K. ; Capone, M. ; Castellani, C. ; Gunnarsson, O. ; Mo, S.-K. ; Allen, J. W. ; Kim, H.-D. ; Sekiyama, A. ; Yamasaki, A. ; Suga, S. ; Metcalf, P.

2006
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/1445  doi:10.1103/PhysRevB.73.205121

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.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Theorie I (IFF-TH-I)

Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2006
Notes: This version is available at the following Publisher URL: http://prb.aps.org

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