4.6 Article

Unusual band renormalization in the simplest iron-based superconductor FeSe1-x

Journal

PHYSICAL REVIEW B
Volume 89, Issue 22, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.220506

Keywords

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Funding

  1. DFG Schwerpunkt-programm [BO1912/3-1, BO1912/2-2]
  2. Russian Foundation for Basic Research [13-02-00174, 14-02-92693, 14-02-92002]
  3. CRDF Grant [FSAX-14-60108-0]
  4. Ministry of Education and Science of Russia [MK-7138.2013.2]

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The electronic structure of the iron chalcogenide superconductor FeSe1-x was investigated by high-resolution angle-resolved photoemission spectroscopy (ARPES). The results were compared to DFT calculations showing some significant differences between the experimental electronic structure of FeSe1-x, DFT calculations, and existing data on FeSexTe1-x. The bands undergo a pronounced orbital-dependent renormalization, different from what was observed for FeSexTe1-x and any other pnictides.

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