‘Trimming’ the edge-states of a topological insulator yields a brand new class of fabric that includes unconventional ‘two approach’ edge transport in a brand new theoretical examine. The brand new materials, a topological crystalline insulator (TCI) kinds a promising addition to the household of topological supplies and considerably broadens the scope of supplies with topologically nontrivial properties, paving the best way for novel strategies to govern edge transport in future electronics. For instance, ‘switching’ the TCI through an electrical area breaking the symmetry supporting the nontrivial band topology, thus suppressing the sting present.