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- W1878453399 abstract "The newly discovered 122-iron-chalcogenide superconductors show clear signatures of Mott-insulating and strange, incoherent metal normal states. Motivated thereby, we use local-density approximation plus dynamical mean-field theory (LDA + DMFT) to study the electronic structure and transport properties of K${}_{x}$Fe${}_{2ensuremath{-}y}$Se${}_{2}$. We find that the undoped KFe${}_{1.6}$Se${}_{2}$ system is a new kind of Mott-Kondo insulator (MKI). Electron doping this MKI drives a Mott transition to an orbital-selective non-Fermi-liquid metal. Good agreement with spectral and transport responses supports our view, implying that superconductivity arises from a doped Mott insulator, as in the high-${T}_{c}$ cuprates." @default.
- W1878453399 created "2016-06-24" @default.
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- W1878453399 date "2011-12-28" @default.
- W1878453399 modified "2023-10-16" @default.
- W1878453399 title "Unconventional Mott transition in K<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mi>x</mml:mi></mml:msub></mml:math>Fe<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:math>Se<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:…" @default.
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- W1878453399 doi "https://doi.org/10.1103/physrevb.84.224520" @default.
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