Normal State Correlated Electronic Structure of Iron Pnictides

Abstract

We describe the correlated electronic structure of a prototype Fe-pnictide superconductor, $Sm{O}_{1-x}{F}_{x}FeAs$, using LDA+DMFT. Strong, multi-orbital electronic correlations generate a low-energy pseudogap in the undistorted phase, giving a bad, incoherent metal in qualitative agreement with observations. Very good semi-quantitative agreement with the experimental spectral functions is seen, and interpreted, within a correlated, multi-orbital picture. Our results show that Fe-pnictides should be understood as low-carrier density, incoherent metals, in resemblance to the underdoped cuprate superconductors.

4 pages, 3 figures

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• Electronic Structure Calculation by First Principles for Strongly Correlated Electron Systems
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• Fermi-liquid, non-Fermi-liquid, and Mott phases in iron pnictides and cuprates
• Low-energy models for correlated materials: bandwidth renormalization from Coulombic screening
• Self consistent GW determination of the interaction strength: application to the iron arsenide superconductors
• Electronic structure of optimally doped pnictide Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$: a comprehensive ARPES investigation
• Classification of the electronic correlation strength in the Fe-pnictides: The case of the parent compound BaFe2As2
• Quantum dynamical screening of the local magnetic moment in Fe-based superconductors
• Orbital selective Fermi surface shifts and mechanism of high T${}_c$ superconductivity in correlated AFeAs (A=Li,Na)
• On the electronic structure of electron doped LaOFeAs as seen by X-ray absorption spectroscopy
• Krylov implementation of the hybridization expansion impurity solver and application to 5-orbital models
• X-ray spectra and electronic structure of FeAs superconductors
• Non-Fermi Liquid due to Orbital Fluctuations in Iron Pnictide Superconductors
• Strength of correlations in pnictides and its assessment by theoretical calculations and spectroscopy experiments
• Pressure-induced magnetic transition and volume collapse in FeAs superconductors: An orbital-selective Mott scenario
• Theory of Multiband Superconductivity in Iron Pnictides
• Effective crystal field and Fermi surface topology: a comparison of d- and dp-orbital models
• Itinerant Nature of Magnetism in Iron Pnictides: A first principles study
• Coulomb Parameter U and Correlation Strength in LaFeAsO
• The magnetic moment enigma in Fe-based high temperature superconductors
• Electronic Structure of CeFeAsO1-xFx (x=0, 0.11/x=0.12) compounds
• Possible origin of the reduced magnetic moment in iron pnictides: A dynamical mean field theory study
• Magnetic Properties of Ab initio Model for Iron-Based Superconductors LaFeAsO
• Evidence of hot and cold spots on the Fermi surface of LiFeAs
• High-energy pseudogap in degenerate Hubbard model induced via Hund coupling
• Two-Cooper-pair problem and the Pauli exclusion principle
• The electronic instabilities of the Iron-based superconductors: a variational Monte-Carlo study
• Electronic structure of NaFeAs superconductor: LDA+DMFT calculations compared with ARPES experiment
• Electronic structure of iron-based superconductors: from pnictides to chalcogenides and other similar systems
• Correlated electrons in Fe-As compounds: a quantum chemical perspective
• Microscopic description of insulator-metal transition in high-pressure oxygen
• LDA'+DMFT Investigation of Electronic Structure of K{1-x}Fe{2-y}Se2 Superconductor
• Theoretical investigation of the electronic and magnetic properties of the orthorhombic phase of Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Theoretical study on the anisotropic electronic structure of antiferromagnetic BaFe${}_2$As${}_2$ and Co-doped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ seen by angle-resolved photoemission
• A direct probe of the variability of Coulomb correlation in Fe-pnictide superconductors
• Importance of Itinerancy and Quantum Fluctuations for the Magnetism in Iron Pnictides
• Doping Dependence of Correlation Effects in K{1-x}Fe{2-y}Se2 Superconductor: LDA'+DMFT Investigation
• Comparative Study of Electronic structure of New Superconductors (Sr,Ca)Pd2As2 and related compound BaPd2As2
• Study of the hyperfine fields in the BaFe${}_2$As${}_2$ family and its relation to the magnetic moment
• Theory of Magnetic Fluctuations in Iron Pnictides
• Resonant inelastic x-ray scattering in single-crystal superconducting PrFeAsO0.7
• Anisotropic two-orbital Hubbard model: single-site versus cluster dynamical mean-field theory