Superconducting temperature of the ω-phase in Ti, Zr and Hf metals at high pressures

Abstract The superconducting transition temperature of the Ti metal is measured in dependence on pressure to 56.0 GPa. A linear T c ( P ) increase is observed in the stability range of ω-Ti, like in the Zr and Hf ω-phases. This general behavior can be related to low electron density of states at the Fermi level at zero pressure and its pressure-induced increase due to the s–d electron transfer.