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Structural Characterization of Defects in the Topological Insulator Bi2Se3 at the Picometer Scale

Liebig, Alexander ; Setescak, Christoph ; Weindl, Adrian ; Giessibl, Franz J.


Topological insulators are a class of materials that are semiconducting or insulating in their bulk but possess topologically protected gapless states at their boundaries. Bi2Se3 is a promising material for applications due to its large band gap and single surface state Dirac cone. Pure electric conduction exclusively via the topological surface state is, however, hampered due to an n-type doping ...


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