Destruction of the small Fermi surfaces in Na${}_x$CoO${}_2$ by Na disorder

Abstract

We show using density functional calculations that the small $e_g^{\prime }$ Fermi surfaces in Na${}_x$CoO${}_2$ are destroyed by Na disorder. This provides a means to resolve the prediction of these sections in band structure calculations with their non-observation in angle resolved photoemission experiments.

arXiv comment4 pages, 2 figs

References in corpus (14)

• Spin entropy as the likely source of enhanced thermopower in $\rm\bf Na_xCo_2O_4
• Fermi surface and quasiparticle dynamics of Na(x)CoO2 {x=0.7} investigated by Angle-Resolved Photoemission Spectroscopy
• Coupling between electronic and structural degrees of freedom in the triangular lattice conductor NaxCoO2
• Fermi surface evolution and Luttinger theorem in Na${}_x$CoO${}_2$: a systematic photoemission study
• ARPES on Na${}_{0.6}$CoO${}_2$: Fermi surface, extended flat dispersion, and unusual band splitting
• Charge Disproportionation and Spin Ordering Tendencies in Na(x)CoO2
• Theory of Sodium Ordering in NaxCoO2
• Electron correlation and Fermi surface topology of Na${}_x$CoO${}_2$
• Nesting, spin-fluctuations, and odd-gap superconductivity in NaxCoO2 yH2O
• A critical assessment of the pairing symmetry in NaxCoO2.yH2O
• The Fermi surface of Na${}_x$CoO${}_2$
• Effect of Dynamical Coulomb Correlations on the Fermi Surface of Na_0.3CoO_2
• Quasiparticle coherence and the nature of the metal-insulator phase transition in Na${}_x$CoO${}_2$
• A Tight-Binding Investigation of the NaxCoO2 Fermi Surface

Cited by in corpus (21)

• Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
• Unfolding first-principles band structures
• Anisotropic chiral d+id superconductivity in NaxCoO2 yH2O
• Complete d-Band Dispersion and the Mobile Fermion Scale in NaxCoO2
• Exact Diagonalization Dynamical Mean Field Theory for Multi-Band Materials: Effect of Coulomb correlations on the Fermi surface of Na_0.3CoO_2
• Can disorder alone destroy the eg' hole pockets of NaxCoO2? A Wannier function based first-principles method for disordered systems
• Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides
• Charge and spin order on the triangular lattice -- Na${}_x$CoO${}_2$ at $x=0.5$
• The low-energy ARPES and heat capacity of Na${}_{0.3}$CoO${}_2$: A DMFT study
• Itinerant in-plane magnetic fluctuations and many-body correlations in Na${}_x$CoO${}_2$
• Fermiology via the electron momentum distribution
• Coulomb correlations do not fill the e'_g hole pockets in Na_{0.3}CoO_2
• Sodium Trimer Ordering on NaxCoO2 Surface
• Electronic structure and Fermi surface tolopogy of Na${}_x$CoO${}_2$
• The origin of a${}_{1g}$ and e${}_g$' orderings in Na${}_x$CoO${}_2$
• Electron-phonon interaction in the lamellar cobaltate Na${}_x$CoO${}_2$
• Chemical Differences between K and Na in Alkali Cobaltates
• Dynamical magnetic susceptibility in the lamellar cobaltate superconductor Na_xCoO_2$\cdot y$H_2O
• Enhancement of the effective disorder potential and the thermopower in Na${}_x$CoO${}_2$ through the electron-phonon coupling
• Infrared Hall conductivity of Na${}_{0.7}$CoO${}_2$
• Anomalous terahertz nonlinearity in disordered s-wave superconductor close to the superconductor-insulator transition