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- W2967553759 abstract "We use the bulk Hamiltonian for a three-dimensional topological insulator such as $rm Bi_2 Se_3$ to study the states which appear on its various surfaces and along the edge between two surfaces. We use both analytical methods based on the surface Hamiltonians (which are derived from the bulk Hamiltonian) and numerical methods based on a lattice discretization of the bulk Hamiltonian. We find that the application of a potential along an edge can give rise to states localized at that edge. These states have an unusual energy-momentum dispersion which can be controlled by applying a potential along the edge; in particular, the velocity of these states can be tuned to zero. The scattering across the edge is studied as a function of the edge potential. We show that a magnetic field in a particular direction can also give rise to zero energy states on certain edges. We point out possible experimental ways of looking for the various edge states." @default.
- W2967553759 created "2019-08-22" @default.
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- W2967553759 date "2014-01-06" @default.
- W2967553759 modified "2023-09-27" @default.
- W2967553759 title "Surface and Edge States of a Three-dimensional Topological Insulator" @default.
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- W2967553759 hasPublicationYear "2014" @default.
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