Angle-resolved photoemission and temperature dependence of 5f electronics states in uranium nitride

A 5f-like photoemission feature in normal emission from UN(100) appears for T<TN e ́el = 53 K. It arises from band states that are modified due to a halving of the Brillouin zone in the antiferromagnetic phase. This is the first observation for f electrons and proves their itinerant character in UN. © 1982.