Static vs. dynamical mean field theory of Mott antiferromagnets

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dc.creatorSangiovanni, G.
dc.creatorToschi, A.
dc.creatorKoch, E.
dc.creatorHeld, K.
dc.creatorCapone, M.
dc.creatorCastellani, C.
dc.creatorGunnarsson, O.
dc.creatorMo, S. -K.
dc.creatorAllen, J. W.
dc.creatorKim, H. -D.
dc.creatorSekiyama, A.
dc.creatorYamasaki, A.
dc.creatorSuga, S.
dc.creatorMetcalf, P.
dc.date2005-11-17
dc.date2006-06-04
dc.date.accessioned2026-07-07T08:22:38Z
dc.date.available2026-07-07T08:22:38Z
dc.descriptionStudying 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 side bands. Already for intermediate values of the interaction $U$ the overall bandwidth is larger than in Hartree-Fock, and the gap is considerably smaller. Such differences survive any renormalization of $U$. Our photoemission experiments for Cr-doped V$_2$O$_3$ show spectra qualitatively well described by dynamical mean field theory.
dc.description6 pages, 5 figures - one figure added and further details about quasiparticle dispersion
dc.identifierhttps://arxiv.org/abs/cond-mat/0511442
dc.identifierhttp://arxiv.org/abs/cond-mat/0511442
dc.identifierPhys. Rev. B 73, 205121 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.205121
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135721
dc.subjectStrongly Correlated Electrons
dc.titleStatic vs. dynamical mean field theory of Mott antiferromagnets
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