Multiband responses in high-Tc cuprate superconductors

Abstract

We report on the interplay of localized and extended degrees of freedom in the metallic state of high-temperature superconductors in a multiband setting. Various ways in which the bare magnetic response may become incommensurate are measured against both phenomenological and theoretical requirements. In particular, the pseudogap temperature is typically much higher than the incommensurability temperature. When microscopic strong-coupling effects with real-time dynamics between copper and oxygen sites are included, they tend to restore commensurability. Quantum transport equations for low-dimensional multiband electronic systems are used to explain the linear doping dependence of the dc conductivity and the doping and temperature dependence of the Hall number in the underdoped LSCO compounds. Coulomb effects of dopands are inferred from the doping evolution of the Hartree-Fock model parameters.

8 pages, 7 figures, invited talk at Superstripes-2013, Ischia, to appear in the Journal of Superconductivity and Novel Magnetism

References in corpus (10)

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• Spin-stripe density varies linearly with hole content in single-layer Bi2201 cuprate
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• Gutzwiller Magnetic Phase Diagram of the Cuprates
• Aspects of Electron-Phonon Self-Energy Revealed from Angle-Resolved Photoemission Spectroscopy
• Electronic Raman scattering in a multiband model for cuprate superconductors
• Diagonal and Collinear Incommensurate Spin Structures in underdoped La${}_{2-x}$Ba${}_x$CuO${}_4$

Cited by in corpus (3)

• Transport properties and doping evolution of the Fermi surface in cuprates
• Fermi arcs and pseudogap emerging from dimensional crossover at the Fermi surface in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Synthesis of Murunskite Single Crystals: A Bridge Between Cuprates and Pnictides