A unified theory for the cuprates, iron-based and similar superconducting systems: non-Fermi-liquid to Fermi-liquid crossover, low-energy and waterfall anomalies

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dc.creatorAshkenazi, J.
dc.date2008-11-27
dc.date.accessioned2026-07-07T12:06:13Z
dc.date.available2026-07-07T12:06:13Z
dc.descriptionA unified theory is outlined for the cuprates, Fe-based, and related superconductors. Their low-energy excitations are approached in terms of auxiliary particles representing combinations of atomic-like electron configurations, and the introduction of a Lagrange Bose field enables their treatment as bosons or fermions. This theory correctly describes the observed phase diagram of the cuprates, including the non-Fermi-liquid to FL crossover in the normal state, the existence of Fermi arcs below T^* and of "marginal-FL" behavior above it. The anomalous behavior of numerous physical quantities is accounted for, including kink- and waterfall-like spectral features, the drop in the scattering rates below T^* and more radically below T_c, and an effective increase in the density of carriers with T and ω, reflected in transport, optical and other properties. Also is explained the correspondence between T_c, the resonance-mode energy, and the increase in the gap below T_c.
dc.description4 pages, 2 figues
dc.identifierhttps://arxiv.org/abs/0811.4561
dc.identifierhttp://arxiv.org/abs/0811.4561
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/208592
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleA unified theory for the cuprates, iron-based and similar superconducting systems: non-Fermi-liquid to Fermi-liquid crossover, low-energy and waterfall anomalies
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