Electron density waves have been observed in many families of superconductors. Recent measurements seem to show that the properties of the iron pnictides are in good agreement with band structure calculations that do not include additional ordering, implying no relation between density waves and superconductivity in those materials. It is reported that the electronic structure of Ba1-xKxFe2As2 is in sharp disagreement with those band structure calculation, instead revealing a reconstruction characterized by a (π, π) wave vector.
- V. B. Zabolotnyy
- D. S. Inosov
- S. V. Borisenko