Tight-binding models for the iron-based superconductors
Helmut Eschrig, Klaus Koepernik
DOI 10.1103/PhysRevB.80.104503 · Physical Review B
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Abstract
The rich materials class of iron-based superconductors turned out to exhibit a very complex electronic structure despite the simplicity of their crystal structures. For various approaches to study the instability against magnetic order or superconductivity, a real-space description of the electronic structure is required. Here, the bonding situation and the orbital structure of the electronic state are analyzed and minimum tight-binding models quantitatively correctly describing the low-energy electronic structure are provided.
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