Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures

Craig M. Polley, Ryszard Buczko, Alexander Forsman +11

The 'double Dirac cone' 2D topological interface states found on the (001) faces of topological crystalline insulators such as Pb${}_{1-x}$Sn${}_x$Se feature degeneracies located awa…