Tight-binding models for the new iron based superconductor materials

Details Tight-binding models for the new iron based superconductor materials Tight-binding models for the new iron based superconductor materials

2009-05-29

arxiv.org/abs/0905.4844v2

Physics

Condensed Matter

Superconductivity

Scientific paper

The rich novel materials class of iron based superconductors turned out to exhibit a very complex electronic structure, despite of 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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