Emergent Majorana zero-modes in an intrinsic anti-ferromagnetic topological superconductor Mn2B2 monolayer

Topological superconductors (TSCs) are an exotic field due to the existence of Majorana zero-modes (MZM) in the edge states that obey non-Abelian statistics and can be used to implement topological quantum computations, especially for two-dimensional (2D) materials. Here we predict manganese diboride (Mn2B2) as an intrinsic 2D anti-ferromagnetic (AFM) TSC based on the magnetic and electronic structures of Mn and B atoms. Once Mn2B2 ML enters a superconducting state, MZM will be induced by the spin-polarized helical gapless edge states. The Z(2) topological non-trivial properties are confirmed by Wannier charge centers (WCC) and the platform of the spin Hall conductivity near the Fermi level. Phonon-electron coupling (EPC) implies s-wave superconductivity and the critical temperature (T-c) is 6.79 K.

Automated summary

In this study, we predict manganese diboride (Mn2B2) as an intrinsic two-dimensional antiferromagnetic topological superconductor that exhibits Majorana zero-modes (MZM) in its edge states. The existence of spin-polarized helical gapless edge states in Mn2B2 induces MZM when it enters the superconducting state. The Z(2) topological non-trivial properties of Mn2B2 are confirmed through Wannier charge centers (WCC) and the spin Hall conductivity platform near the Fermi level. The phonon-electron coupling suggests s-wave superconductivity with a critical temperature (Tc) of 6.79 K.