Stanene
Stanene is a 2D material and a 2D topological insulator. Stanene is composed of tin atoms arranged in a single, hexagonal layer, in a manner similar to graphene. Its name combes stannum (the Latin name for tin) with the suffix -ene used by graphene.
Stanene as a 2D topological insulator was theoretically predicted by Yao's group in 2011, and its functionalized derivations as topological insulators were predicted by Zhang's group in 2013. Both may display dissipationless superconductive currents at their edges near room temperature.