Density response of cuprates and renormalization of breathing phonons

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dc.creatorHorsch, P.
dc.creatorKhaliullin, G.
dc.date2001-07-14
dc.date.accessioned2026-07-07T02:42:10Z
dc.date.available2026-07-07T02:42:10Z
dc.descriptionWe analyse the dynamical density fluctuation spectra for cuprates starting from the $t-J$ model in a slave-boson 1/N representation. The results obtained are consistent with diagonalization studies and show novel low-energy structure on the energy scale $J+δt$ due to the correlated motion of holes in a RVB spin liquid. The low-energy response implies an anomalous renormalization of several phonon modes. Here we discuss the renormalization of the highest breathing phonons in La$_{2-x}$Sr$_x$CuO$_4$.
dc.description10 pages and 8 figures, talk given at NATO Advanced Research Workshop, Bled, Slovenia, 26-30 April 2000
dc.identifierhttps://arxiv.org/abs/cond-mat/0107323
dc.identifierhttp://arxiv.org/abs/cond-mat/0107323
dc.identifierpubl. in "Open Problems in Strongly Correlated Electron Systems", eds. J. Bonca et al. (Kluwer-Academic, Boston, 2001), p. 81-90
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18033
dc.subjectStrongly Correlated Electrons
dc.titleDensity response of cuprates and renormalization of breathing phonons
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