Dynamical correlations in one-dimensional charge-transfer insulators

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dc.creatorPenc, Karlo
dc.creatorStephan, Walter
dc.date2000-09-22
dc.date.accessioned2026-07-07T12:47:13Z
dc.date.available2026-07-07T12:47:13Z
dc.descriptionThe single-particle spectral function and the density response of a two band Emery model for CuO chains is calculated for large on-site Cu repulsion U and large on-site energy difference Δ. For U>>U-Δ>>t the eigenfunctions are products of charge and spin parts, which allows analytical calculation of spectral functions in that limit. For other parameters numerical diagonalization is used. The low energy hole carriers are shown to be the one-dimensional analogs of the Zhang-Rice singlets. The validity of the one-band model is discussed. The results are relevant to the interpretation of photoemission and EELS experiments on SrCuO2 and Sr2CuO3 .
dc.description9 pages, 5 figures, to appear in Phys Rev B
dc.identifierhttps://arxiv.org/abs/cond-mat/0009357
dc.identifierhttp://arxiv.org/abs/cond-mat/0009357
dc.identifierPhys. Rev. B 62, 12707 (2000)
dc.identifierdoi:10.1103/PhysRevB.62.12707
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221642
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleDynamical correlations in one-dimensional charge-transfer insulators
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