Strain induced multigpap superconductivity in electrene Mo₂N.

Superconductivity in low dimensional materials and 2-D electrenes are topics of intense interest. Using Density functional theory (DFT), density functional perturbation theory DFTPT, and maximally localized Wannier functions associated with Migdal-Eliasberg approach, it is shown that the 2-D electrine Mo₂N presents superconductivity at ambient pressure with transition temperature T_c = 24.7 K. This study also shows how biaxial strain affects superconductivity in a monolayer of Mo₂N. Results indicate that 2-D Mo₂N presents strong electron-phonon coupling with large anisotropy in the superconducting energy gap. The effect of biaxial strain shows interesting behavior evidencing the emergency of multigap superconductivity in this material. T_c = 24.7 K, is record high transition temperature for this class of material at ambient pressure.