Journal Article Double-Q spin-density wave in iron arsenide superconductors DOI Link https://doi.org/http://dx.doi.org/10.1038/nphys3629 Authors Allred J.M., Taddei K.M., Bugaris D.E., Krogstad M.J., Lapidus S., Chung D.Y., Claus H., Kanatzidis M.G., Brown D.E., Kang J.Y., Fernandes R.M., Eremin I., Rosenkranz S., Chmaissem O., Osborn R. Publication Nature Physics Pages 493–498 Volume 12 Instruments POWGEN | BL-11A | SNS VERITAS | HB-1A | HFIR