Shadow Bands in the Cuprates

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dc.creatorHaas, Stephan
dc.creatorMoreo, Adriana
dc.creatorDagotto, Elbio
dc.date1994-11-04
dc.date.accessioned2026-07-07T03:07:30Z
dc.date.available2026-07-07T03:07:30Z
dc.descriptionA consequence of strong antiferromagnetic correlations in models of high-Tc cuprates is the appearance in photoemission (PES) calculations of considerable more weight above the Fermi momentum ${\rm {\bf p}_F }$ than expected for non-interacting electrons. This effect, first discussed by Kampf and Schrieffer (Phys. Rev. {\bf B 41}, 6399 (1990)) under the name of ``shadow bands'', is here analyzed in the two dimensional Hubbard and t-J models using Monte Carlo and exact diagonalization techniques. It is concluded that for underdoped compounds weight above ${\rm {\bf p}_F }$ could be observable in experimental PES data, while in the overdoped regime it will be likely hidden in the experimental background. In the intermediate region the signal is weak. Our results are thus compatible with recent experimental data by Aebi et al. (Phys. Rev. Lett. {\bf 72}, 2757 (1994)) for Bi2212 at optimal doping. However, to definitely prove the existence of this effect in the cuprates, experiments in the underdoped regime are necessary.
dc.description4 pages, REVTEX, 5 uuencoded postscript figures, submitted on Oct. 14, 1994
dc.identifierhttps://arxiv.org/abs/cond-mat/9411018
dc.identifierhttp://arxiv.org/abs/cond-mat/9411018
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27195
dc.subjectCondensed Matter
dc.titleShadow Bands in the Cuprates
dc.typetext

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