Superconductivity in transuranium elements and compounds

We present here an overview of the properties of transuranium superconductors, but also of the (non-superconducting) transuranium analogues of uranium superconductors. We briefly review superconductivity in actinide elements and uranium compounds and focus in particular on the ${\text{PuTX}}_5$ ($T=\text{Co},\text{Rh}$; $\text{X}=\text{Ga},\text{In}$) series, the largest superconducting system in actinides and ${\text{NpPd}}_5{\text{Al}}_2$, the so far unique neptunium superconductor. The effects of chemical substitution, ageing and pressure on the properties of transuranium superconductors are also discussed.