The Fincher-Burke spin excitations and omega/T scaling in the insulating 5% Sr-doped La2CuO4

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dc.creatorBao, Wei
dc.creatorChen, Ying
dc.creatorYamada, K.
dc.creatorSavici, A. T.
dc.creatorRusso, P. L.
dc.creatorLorenzo, J. E.
dc.creatorChung, J. -H.
dc.date2007-04-09
dc.date2007-10-23
dc.date.accessioned2026-07-07T08:48:42Z
dc.date.available2026-07-07T08:48:42Z
dc.descriptionInsulating La1.95Sr0.05CuO4 shares with superconducting cuprates the same Fincher-Burke-like spin excitations, which usually are observed in itinerant antiferromagnets. The local spectral function satisfies omega/T scaling above ~16 K for this incommensurate insulating cuprate. Together with previous results in commensurate insulating and incommensurate superconducting cuprates, these results further support the general scaling prediction for square-lattice quantum spin S=1/2 systems. The width of incommensurate peaks in La1.95Sr0.05CuO4 scales to a similar finite value as at optimal doping, strongly suggesting that they are similarly distant from a quantum critical point. They might both be limited to a finite correlation length by the partial spin-glass freezing.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0704.1161
dc.identifierhttp://arxiv.org/abs/0704.1161
dc.identifierPhys. Rev. B vol. 76, 180406(R) (2007)
dc.identifierdoi:10.1103/PhysRevB.76.180406
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/144041
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleThe Fincher-Burke spin excitations and omega/T scaling in the insulating 5% Sr-doped La2CuO4
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