Superconductivity of Lutecium
Nikulin E.I. , Volkenshtein N.V. , Staftsev V.E.
We measured the electric resistance of lutecium in the temperature range 0.03 4.2°K. A transition to the superconducting state was observed in the purest (99.9/0 samples containing no ferromagnetic impurities. The transition temperature is TQ = 0.10 ± 0-.03°£ and the critical magnetic field is Hc < 400 Oe