Enhancement of the superconducting transition temperature by Re doping in Weyl semimetal MoTe 2

The discovery of superconductivity in type-II Weyl semimetal MoTe${}_{2}$ has sparked great research interest because it can lead to various exotic quantum states. In this work, the authors show that electron doping at the Mo site in 1$T$${}^{\ensuremath{'}}$-MoTe${}_{2}$ (room temperature structure) phase can enhance the superconducting transition temperature ($T$${}_{c}$). They found that electron doping by means of Re substitution facilities the emergence of superconductivity by enhancing the electron-phonon coupling and density of states at the Fermi level. A record high $T$${}_{c}$ at ambient pressure is observed for Mo${}_{0.7}$Re${}_{0.3}$Te${}_{2}$.