Collective density wave excitations in two-leg Sr_{14-x}Ca_xCu_{24}O_{41} ladders

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dc.creatorGozar, A.
dc.creatorBlumberg, G.
dc.creatorLittlewood, P. B.
dc.creatorDennis, B. S.
dc.creatorMotoyama, N.
dc.creatorEisaki, H.
dc.creatorUchida, S.
dc.date2002-07-09
dc.date.accessioned2026-07-07T08:51:30Z
dc.date.available2026-07-07T08:51:30Z
dc.descriptionRaman measurements in the 1.5 - 20 cm-1 energy range were performed on single crystals of Sr_{14-x}Ca_xCu_{24}O_{41}. A quasielastic scattering peak (QEP) which softens with cooling is observed in the polarization parallel to the ladder direction for samples with x = 0, 8 and 12. The QEP is a Raman fingerprint of pinned collective density wave excitations screened by uncondensed carriers. Our results suggest that transport in metallic samples, which is similar to transport in underdoped high-T_c cuprates, is driven by a collective electronic response.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0207219
dc.identifierhttp://arxiv.org/abs/cond-mat/0207219
dc.identifierPhys. Rev. Letters 91, 087401 (2003)
dc.identifierdoi:10.1103/PhysRevLett.91.087401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/144956
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleCollective density wave excitations in two-leg Sr_{14-x}Ca_xCu_{24}O_{41} ladders
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