Universal Behavior and the Two-component Character of Magnetically Underdoped Cuprate Superconductors

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dc.creatorBarzykin, Victor
dc.creatorPines, David
dc.date2009-03-10
dc.date.accessioned2026-07-07T12:50:56Z
dc.date.available2026-07-07T12:50:56Z
dc.descriptionWe present a detailed review of scaling behavior in the magnetically underdoped cuprate superconductors (hole dopings less than 0.20) and show that it reflects the presence of two coupled components throughout this doping regime: a non-Landau Fermi liquid and a spin liquid whose behavior maps onto the theoretical Monte Carlo calculations of the 2D Heisenberg model of localized Cu spins for most of its temperature domain. We use this mapping to extract the doping dependence of the strength, $f(x)$ of the spin liquid component and the effective interaction, J_eff(x) between the remnant localized spins that compose it; we find both decrease linearly with x as the doping level increases. We discuss the physical origin of pseudogap behavior and conclude that it is consistent with scenarios in which the both the large energy gaps found in the normal state and their subsequent superconductivity are brought about by the coupling between the Fermi liquid quasiparticles and the spin liquid excitations, and that differences in this coupling between the 1-2-3 and 2-1-4 materials can explain the measured differences in their superconducting transition temperatures and other properties.
dc.description80 pages, 43 figures
dc.identifierhttps://arxiv.org/abs/0903.1835
dc.identifierhttp://arxiv.org/abs/0903.1835
dc.identifierAdvances in Physics, 58, pp. 1-65 (2009)
dc.identifierdoi:10.1080/00018730802567505
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222840
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleUniversal Behavior and the Two-component Character of Magnetically Underdoped Cuprate Superconductors
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