Do Transition Metal Substitutions Dope Carriers in Iron Based Superconductors?

Abstract

We investigate the currently debated issue concerning whether transition metal substitutions dope carriers in iron based superconductors. From first-principles calculations of the configuration-averaged spectral function of BaFe${}_2$As${}_2$ with disordered Co/Zn substitutions of Fe, important doping effects are found beyond merely changing the carrier density. While the chemical potential shifts suggest doping of a large amount of carriers, a reduction of the coherent carrier density is found due to the loss of spectral weight. Therefore, none of the change in the Fermi surface, density of states, or charge distribution can be solely used for counting doped coherent carriers, let alone presenting the full effects of the disordered substitutions. Our study highlights the necessity of including disorder effects in the studies of doped materials in general.

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Cited by in corpus (81)

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• Crystal Growth and Physical Properties of SrCu2As2, SrCu2Sb2 and BaCu2Sb2
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• Large temperature dependence of the number of carriers in Co-doped BaFe2As2
• Probing the role of Co substitution in the electronic structure of iron-pnictides
• Effective doping and suppression of Fermi surface reconstruction via Fe vacancy disorder in KxFe2-ySe2
• A Mott insulator continuously connected to iron pnictide superconductors
• Electronic band structure of BaCo${}_2$As${}_2$: a fully-doped ferropnictide with reduced electronic correlations
• Spin-Fluctuation-Induced Non-Fermi-Liquid Behavior with suppressed superconductivity in LiFe${}_{1-x}$Co${}_x$As
• Phase diagram and physical properties of NaFe${}_{1-x}$Cu${}_x$As single crystals
• Effects of transition metal substitutions on the incommensurability and spin fluctuations in BaFe2As2 by elastic and inelastic neutron scattering
• Do Se vacancies electron dope monolayer FeSe?
• Photoemission and X-ray Absorption Studies of the Diluted Magnetic Semiconductor Ba${}_{1-y}$K${}_y$(Zn${}_{1-x}$Mn${}_x$)${}_2$As${}_2$ Isostructural to Fe-based Superconductors
• A general group theoretical method to unfold band structures and its application
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• Disorder-promoted $C_4$-symmetric magnetic order in iron-based superconductors
• Charge doping versus disorder in CeFeAsO: do the in- and out-of-plane dilutions play the same role?
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• Electronic structure of single-crystalline Sr(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ probed by x-ray absorption spectroscopy: Evidence for isovalent substitution of Fe${}^{2+}$ by Co${}^{2+}$
• Effects of disordered Ru substitution in BaFe${}_2$As${}_2$: Realization of superdiffusion mechanism in real materials
• Systematic Quantum Cluster Typical Medium Method For the Study of Localization in Strongly Disordered Electronic Systems
• Towards a quantitative description of tunneling conductance of superconductors: application to LiFeAs
• The anomaly Cu doping effects on LiFeAs superconductors
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• Quantum Unfolding: A program for unfolding electronic energy bands of materials
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• Of Substitution and Doping: Spatial and Electronic Structure in Fe Pnictides
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• A view from inside iron-based superconductors
• Improving quantum-transition temperatures in BaFe2As2-based crystals by removing local-lattice strain & electronic-structure disorder
• Disorder effects in multiorbital $s_{\pm }$-wave superconductors: Implications for Zn-doped BaFe${}_2$As${}_2$ compounds
• Fermi surface and effective masses in photoemission response of the (Ba${}_{1-x}$K${}_x$)Fe${}_2$As${}_2$ superconductor
• Possible unconventional superconductivity in substituted BaFe${}_2$As${}_2$ revealed by magnetic pair-breaking studies
• Enhanced low-energy magnetic excitations via suppression of the itinerancy in Fe0.98-zCuzTe0.5Se0.5
• Tunneling spectroscopy for probing orbital anisotropy in iron pnictides
• Effect of realistic out-of-plane dopant potentials on the superfluid density of overdoped cuprates
• Iron-based superconductors: tales from the nuclei
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• Superconducting phase diagrams of cuprates and pnictides as a key to the HTSC mechanism
• Effect of weak disorder on the phase competition in iron pnictides
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• Transition-Metal Substitutions in Iron Chalcogenides
• Strong similarities between the local electronic structure of insulating iron pnictide and lightly doped cuprate
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• On the Nature of Localization in Ti doped Si
• Localization and Orbital Selectivity in Iron-Based Superconductors with Cu Substitution
• Effects of Zn substitution on the electronic structure of BaFe${}_2$As${}_2$ revealed by angle-resolved photoemission spectroscopy
• Unfolding the electronic structure of Ca${}_{10}$(Fe${}_{1-x}$Pt${}_x$As)${}_{10}$(Pt${}_n$As${}_8$)
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
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• Electronic structure and quantum criticality in Ba(Fe${}_{1-x-y}$Co${}_x$Mn${}_y$)${}_2$As${}_2$, an ARPES study
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• Observation of charge accumulation and onsite Coulomb repulsion at transition metal impurities in the iron pnictides
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• Study of the hyperfine fields in the BaFe${}_2$As${}_2$ family and its relation to the magnetic moment
• Fermi arcs and pseudogap emerging from dimensional crossover at the Fermi surface in La${}_{2-x}$Sr${}_x$CuO${}_4$
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• Non-rigid band shift and non-monotonic electronic structure changes upon doping in the normal state of the pnictide high temperature superconductor Ba2(Fe1-xCox)2As2
• Effect of electron doping in FeTe${}_{1-y}$Se${}_y$ realized by Co and Ni substitution
• Quantum fluctuation of ferroelectric order in polar metals
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• Enhanced low-energy magnetic excitations evidencing the Cu-induced localization in an Fe-based superconductor Fe${}_{0.98}$Te${}_{0.5}$Se${}_{0.5}$
• Effects of single- and multi-substituted Zn ions in doped-122 type iron-based superconductors
• Fluctuating magnetism of Co- and Cu-doped NaFeAs
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• Cuprates, Pnictides and Sulfosalts: Lessons in Functional Materials
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