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Modelling near-surface bound electron states in a 3D topological insulator: analytical and numerical approaches
We apply both analytical and ab-initio methods to explore heterostructures composed of a threedimensional topological insulator (3D TI) and an ultrathin normal insulator (NI) overlayer as a proof ground for the principles of the topological phase engineering.Using the continual model of a semi-infinite 3D TI we study the surface potential …