Journal Article

PreJuSER-52188

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electron-Phonon Interaction and Antiferromagnetic Correlations

Sangiovanni, G. ; Gunnarsson, O. ; Koch, E.FZJ* ; Castellani, C. ; Capone, M.

2006
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/1444  doi:10.1103/PhysRevLett.97.046404

Abstract: We study effects of the Coulomb repulsion on the electron-phonon interaction (EPI) in the Holstein-Hubbard model, using the antiferromagnetic (AF) dynamical mean-field approximation. AF correlations strongly enhance EPI effects on the electron Green's function with respect to the paramagnetic correlated system, but the net effect of the Coulomb interaction is a moderate suppression of the EPI. Doping leads to additional suppression. In contrast, the Coulomb interaction strongly suppresses EPI effects on phonons, but the suppression weakens with doping.

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://prl.aps.org

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