Systematic analysis of topological and magnetic propertiesof materials related to MnBi₂Te₄ by substitution

The search for materials with axion insulator phases has motivated extensive research about interactions between topological surface states and symmetry-breaking magnetic ordering, with possible applications in spintronics and quantum information. Recently, experimental and theoretical works have focused on MnBi₂Te₄ (MBT), which is predicted to display the exotic quantum phase. In this work, we have looked MBT family (MnB₂X₄ (B = Sb, Bi; X=Se, Te)). We study the topological properties and magnetic properties of new candidate materials. Our calculations reveal several potential topological materials, with properties depending on the filling of d electrons and the magnetic ordering. We demonstrated that the topological phase transition completely depends on the chemical composition of the materials. These types of stoichiometric magnetic materials are an excellent candidate for future topological devices.