Origin of charge density wave in the coupled spin ladders in Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$

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dc.creatorWohlfeld, Krzysztof
dc.creatorOles, Andrzej M.
dc.creatorSawatzky, George A.
dc.date2007-03-26
dc.date2007-05-23
dc.date.accessioned2026-07-07T08:05:49Z
dc.date.available2026-07-07T08:05:49Z
dc.descriptionWe formulate a d-p multiband charge transfer model for Cu$_2$O$_5$ coupled spin ladders, relevant for Cu$_2$O$_3$ plane of Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$, and solve it using Hartree-Fock approximation. The results explain that (i) the charge density wave (CDW) with its periodicity dependent on doping is stabilized by purely electronic many-body interactions in a single spin ladder and (ii) the inclusion of the interladder interactions favors (disfavors) the stability of the CDW with odd (even) periodicity, respectively. This stays in agreement with recent experimental results and suggests the structure of the minimal microscopic model which should be considered in future more sophisticated studies.
dc.description5 pages, 4 figures; figures made more transparent, typos corrected, one reference added, journal-ref added
dc.identifierhttps://arxiv.org/abs/cond-mat/0703669
dc.identifierhttp://arxiv.org/abs/cond-mat/0703669
dc.identifierPhysical Review B 75, 180501(R) (2007)
dc.identifierdoi:10.1103/PhysRevB.75.180501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/130400
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleOrigin of charge density wave in the coupled spin ladders in Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$
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