Direct imaging of the structural domains in iron pnictides AFe2As2 (A = Ca, Sr, Ba)

M. A. Tanatar, A. Kreyssig, S. Nandi +5

The parent compounds of recently discovered iron-arsenide superconductors, $A$Fe${}_2$As${}_2$ with alkaline earth $A$=Ca, Sr, Ba, undergo simultaneous structural and magnetic phase tr…