In-plane oxygens in high-temperature superconducting cuprates

Abstract

The role of the oxygen degree of freedom in the cuprates' superconducting planes is analyzed in detail. Structural and photoemission results are reviewed to show that the most sparse description of the in-plane electronic states requires explicit control of the oxygens. For metallic states, the relative contributions of oxygen and copper vary along the Fermi surface, with the arc metallicity dominantly oxygen-derived. For the magnetic responses, we find that the observed incommensurability arises naturally if one keeps separate the roles of the two sites. For the charge order in LBCO, we propose a scenario, based on magnetic interactions in the plane. We stress the need for further experimental investigations of the evolution of the intracell charge distribution with doping, and for a better theoretical understanding of the large particle-hole-symmetry breaking required for successful phenomenologies, but difficult to reconcile with ab initio calculations.

Invited talk at Superstripes-2012, Erice, final version as accepted by the Journal of Superconductivity and Novel Magnetism - some references corrected

References in corpus (5)

• Stripe order in superconducting La(2-x)Ba(x)CuO(4) for 0.095 <= x <= 0.155
• Evidence for unusual superconducting correlations coexisting with stripe order in La(1.875)Ba(0.125)CuO(4)
• The hierarchy of multiple many-body interaction scales in high-temperature superconductors
• Diagonal and Collinear Incommensurate Spin Structures in underdoped La${}_{2-x}$Ba${}_x$CuO${}_4$
• The electronic pseudogap in optimally doped NCCO

Cited by in corpus (1)

• Fundamental building blocks of strongly correlated wave functions