Satellites and large doping and temperature dependence of electronic properties in hole-doped BaFe2As2

DOI DOI PDF Web Site 被引用文献12件 参考文献44件 オープンアクセス

書誌事項

公開日
2012-03-04
資源種別
journal article
権利情報
  • http://www.springer.com/tdm
DOI
  • 10.1038/nphys2250
  • 10.48550/arxiv.1107.3128
公開者
Springer Science and Business Media LLC

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説明

Over the last years, superconductivity has been discovered in several families of iron-based compounds. Despite intense research, even basic electronic properties of these materials, such as Fermi surfaces, effective electron masses, or orbital characters are still subject to debate. Here, we address an issue that has not been considered before, namely the consequences of dynamical screening of the Coulomb interactions among Fe-d electrons. We demonstrate its importance not only for correlation satellites seen in photoemission spectroscopy, but also for the low-energy electronic structure. From our analysis of the normal phase of BaFe2As2 emerges the picture of a strongly correlated compound with strongly doping- and temperature-dependent properties. In the hole overdoped regime, an incoherent metal is found, while Fermi-liquid behavior is recovered in the undoped compound. At optimal doping, the self-energy exhibits an unusual square-root energy dependence which leads to strong band renormalizations near the Fermi level.

収録刊行物

  • Nature Physics

    Nature Physics 8 (4), 331-337, 2012-03-04

    Springer Science and Business Media LLC

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