Emergence of superconducting dome in insulating ZrNx films via nitrogen manipulation

, Reproducing the electronic phase diagram of strongly correlated high-transition-temperature (high- T c ) superconductors in materials other than Cu-, Fe-, and Ni-based compounds has been a challenging task. We combine film growth, charge transport, magnetometry, Terahertz Spectroscopy, Raman scattering, and Scanning Transmission Electron Microscopy to investigate superconductivity and the normal state of ZrN x , which reveals a phase diagram that bears extraordinary visual similarities to those of high- T c superconductors. By tunning the N chemical concentration, we observe the evolution of a superconducting dome in the close vicinity of a strongly insulating state and a normal state resistivity mimics its counterpart of the high- T c superconductors. Our detailed analyses demonstrate that the superconductivity of ZrN x can be characterized within the Bardeen-Cooper-Schrieffer paradigm and its normal