Dirac materials beyond graphene

The meaning of Dirac's materials, in its most common sense, has been explored by taking a quick look at the Dirac equation, as originally formulated, and subsequently applied to the structure of condensed matter, of two-dimensional (2D) materials beyond graphene. What makes 2D materials exceptional, as well as the discovery of new allotropic forms, is the possibility of having extraordinary physical properties, such as energy dispersion, which immediately can correlate electrons to their being Dirac fermions. Through experimental and theoretical examples, we report structural and electronic properties of 2D materials beyond graphene, which today represent the frontier of condensed matter physics.