Theory of Fermi-surface pockets and correlation effects in underdopedYBa2Cu3O6.5

2007/06/30 by I. S. Elfimov, Ilya Elfimov, G. A. Sawatzky +1 · 3 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.77.060504

published as Phys. Rev. B 77, 060504(R) (2008). · A high-resolution version can be found at http://www.physics.ubc.ca/~quantmat/ARPES/PUBLICATIONS/Articles/YBCO_OrthoII_LDA.pdf

arxiv created 2008/01/18 · openalex publication_date 2008/02/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The detection of quantum oscillations in the electrical resistivity of YBa₂Cu₃O_6.5 provides evidence for the existence of Fermi-surface pockets in an underdoped cuprate. We present a theoretical study of the electronic structure of YBa₂Cu₃O_7\ensuremath-\ensuremathδ aimed at establishing the nature of these pockets---i.e., CuO₂ plane vs CuO chain or BaO. We argue that electron correlation effects, such as orbital-dependent band distortions and anisotropic self-energy corrections, must be taken into account to interpret the quantum oscillation experiments.

Citations

• Theory of Underdoped Cuprates
• Destruction of the Fermi surface in underdoped high-Tc superconductors

Cited by

• Loss of nodal quasiparticle integrity in underdoped YBa2Cu3O6+x
• Fermi-surface reconstruction in a smectic phase of a high-temperature superconductor
• Spin-Density Wave Fermi Surface Reconstruction in UnderdopedYBa2Cu3O6+x