The low-energy ARPES and heat capacity of Na${}_{0.3}$CoO${}_2$: A DMFT study

Abstract

The cobaltates have demonstrated a wide variety complex behavior. The Na rich region of the phase diagram displays various degrees of anomalous behavior, such as Curie-Weiss behavior near a band insulator\cite{Foo:2004}, charge disproportionation\cite{Mukhamedshin:2005}, and non-Fermi-liquid behavior in the resistivity\cite{Foo:2004}. Alternatively, the Na poor region of the phase diagram appears to be a Fermi-liquid. The magnetic susceptibility displays Pauli behavior, the resistivity is roughly quadratic at low temperatures\cite{Foo:2004}, and the system appears to be homogeneous\cite{Mukhamedshin:2005}. Therefore, the Na poor region of the phase diagram seems like a natural starting point to attempt to explain the ARPES experiments and heat capacity measurements from a quantitative standpoint.

References in corpus (12)

• Quantum Monte Carlo Impurity Solver for Cluster DMFT and Electronic Structure Calculations in Adjustable Base
• Hybridization expansion impurity solver: General formulation and application to Kondo lattice and two-orbital models
• Fermi surface evolution and Luttinger theorem in Na${}_x$CoO${}_2$: a systematic photoemission study
• Electron correlation and Fermi surface topology of Na${}_x$CoO${}_2$
• Low-lying quasiparticle states and hidden collective charge instabilities in parent cobaltate superconductors (NaxCoO2)
• Complete d-Band Dispersion and the Mobile Fermion Scale in NaxCoO2
• Na Induced Correlations in Na${}_x$CoO${}_2$
• Quasiparticle coherence and the nature of the metal-insulator phase transition in Na${}_x$CoO${}_2$
• An ab-initio evaluation of the local effective interactions in the superconducting compound $Na\_0.35CoO\_2-1.3H\_2O$
• Destruction of the small Fermi surfaces in Na${}_x$CoO${}_2$ by Na disorder
• Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides
• Shubnikov de Haas effect in the metallic state of Na${}_{0.3}$CoO${}_2$

Cited by in corpus (12)

• Continuous-time Monte Carlo methods for quantum impurity models
• Effect of Crystal-Field Splitting and Inter-Band Hybridization on the Metal-Insulator Transitions of Strongly Correlated Systems
• Phase Diagram of Na${}_x$CoO${}_2$ Studied by Gutzwiller Density Functional Theory
• Competition between charge and spin order in the $t-U-V$ extended Hubbard model on the triangular lattice
• Mottness on a triangular lattice
• Coulomb correlations do not fill the e'_g hole pockets in Na_{0.3}CoO_2
• Dynamical mean field theory of an effective three-band model for Na${}_x$CoO${}_2$
• The electronic structure of the Na${}_x$CoO${}_2$ surface
• The origin of a${}_{1g}$ and e${}_g$' orderings in Na${}_x$CoO${}_2$
• The importance of electronic correlations in exploring the exotic phase diagram of layered Li${}_x$MnO${}_2$
• s-wave Superconductivity due to Suhl-Kondo Mechanism in Na${}_x$CoO${}_2\cdot y$H${}_2$O: Effect of Coulomb Interaction and Trigonal Distortion
• Importance of electronic correlations for the magnetic properties of the two-dimensional ferromagnet CoBr${}_2$