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- W2019940844 abstract "We have performed angle-resolved photoemission spectroscopy of the iron-chalcogenide superconductor Fe1.03Te0.7Se0.3 to investigate the electronic structure relevant to superconductivity. We observed a holelike Fermi surface (FS) and an electronlike FS at the Brillouin zone center and corner, respectively, which are nearly nested by the Q∼(π,π) wave vector. We do not find evidence for the nesting instability with Q∼(π+δ,0) reminiscent of the antiferromagnetic order in the parent compound Fe1+yTe. We have observed an isotropic superconducting (SC) gap along the holelike FS with the gap size Δ of ∼4 meV (2Δ/kBTc ∼ 7), demonstrating the strong-coupling superconductivity. The observed similarity of low-energy electronic excitations between iron-chalcogenides and iron-arsenides strongly suggests that common interactions which involve Q∼(π,π) scattering are responsible for the SC pairing." @default.
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- W2019940844 date "2010-11-02" @default.
- W2019940844 modified "2023-10-02" @default.
- W2019940844 title "Angle-Resolved Photoemission Spectroscopy of the Iron-Chalcogenide Superconductor<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>Fe</mml:mi><mml:mn>1.03</mml:mn></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mn>0.7</mml:mn></mml:msub><mml:msub><mml:mi>Se</mml:mi><mml:mn>0.3</mml:mn></mml:msub></mml:math>: Strong Coupling Behavior and the Universality of Interband Scattering" @default.
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- W2019940844 doi "https://doi.org/10.1103/physrevlett.105.197001" @default.
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