Superconductivity in uranium compounds withCu3Au structure

Abstract
Superconductivity has been observed in uranium compounds with partly disordered Cu3Au-type crystal structure and interatomic UU distances of more than 4 Å. Low-temperature specific-heat experiments reveal no anomalous enhancement of the electronic specific heat thus distinguishing the present materials from the unconventional superconductors UBe13 and UPt3.