Matches in SemOpenAlex for { <https://semopenalex.org/work/W1489502481> ?p ?o ?g. }
- W1489502481 abstract "BaFe${}_{2}$(As${}_{1ensuremath{-}x}$P${}_{x}$)${}_{2}$ is a unique iron-based superconductor, where the superconductivity is induced by the isovalent substitution of phosphorus (P) for arsenic (As). Unlike other iron pnictides, the superconducting gap in BaFe${}_{2}$(As${}_{1ensuremath{-}x}$P${}_{x}$)${}_{2}$ has been suggested to contain nodal lines by various experiments. The exact nature of the isovalent doping and nodal gap are key open issues in building a comprehensive picture of the iron-based superconductors. With angle-resolved photoemission spectroscopy, we found that the P substitution in BaFe${}_{2}$(As${}_{1ensuremath{-}x}$P${}_{x}$)${}_{2}$ alters the electronic structure significantly. With P doping, the hole and electron Fermi surface sheets expand simultaneously and the band velocities are enhanced indicating a suppression of electron correlations. Moreover, the P doping induces strong ${k}_{z}$ dispersion on the ${d}_{xz}$-originated band with significant mixing of the ${d}_{{z}^{2}}$ orbital around Z, while the ${d}_{xy}$-originated band and the electron pockets are relatively intact. These rule out theories suggesting that the nodal gap is due to the vanishing ${d}_{xy}$ hole pocket, while support those considering a ${d}_{{z}^{2}}$-dominated hole Fermi surface around Z being responsible. Our results are thus helpful to explain the nodal superconductivity in BaFe${}_{2}$(As${}_{1ensuremath{-}x}$P${}_{x}$)${}_{2}$ and understand the role of lattice parameter or pressure effect in iron-based superconductors." @default.
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- W1489502481 date "2012-07-23" @default.
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- W1489502481 title "Doping dependence of the electronic structure in phosphorus-doped ferropnictide superconductor BaFe<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>(As<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:math>P<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=…" @default.
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- W1489502481 doi "https://doi.org/10.1103/physrevb.86.035136" @default.
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