Experimental evidence of paired hole states in model high-$T_c$ compounds

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dc.creatorRusydi, A.
dc.creatorAbbamonte, P.
dc.creatorBerciu, M.
dc.creatorSmadici, S.
dc.creatorEisaki, H.
dc.creatorFujimaki, Y.
dc.creatorUchida, S.
dc.creatorRuebhausen, M.
dc.creatorSawatzky, G. A.
dc.date2006-04-04
dc.date.accessioned2026-07-07T07:05:16Z
dc.date.available2026-07-07T07:05:16Z
dc.descriptionThe distribution of holes in Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$ (SCCO) is revisited with semi-emperical reanalysis of the x-ray absorption (XAS) data and exact-diagonalized cluster calculations. A new interpretation of the XAS data leads to much larger ladder hole densities than previously suggested. These new hole densities lead to a simple interpretation of the hole crystal (HC) recently reported with 1/3 and 1/5 wave vectors along the ladder. Our interpretation is consistent with paired holes in the rung of the ladders. Exact diagonalization results for a minimal model of the doped ladders suggest that the stabilization of spin structures consisting of 4 spins in a square plaquette as a result of resonance valence bond (RVB) physics suppresses the hole crystal with a 1/4 wave vector.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604101
dc.identifierhttp://arxiv.org/abs/cond-mat/0604101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109612
dc.subjectStrongly Correlated Electrons
dc.titleExperimental evidence of paired hole states in model high-$T_c$ compounds
dc.typetext

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