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Gate-defined coupled quantum dots in topological insulators

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Ertler, Christian ; Raith, Martin ; Fabian, Jaroslav
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Date of publication of this fulltext: 04 Apr 2014 13:39


We consider electrostatically coupled quantum dots in topological insulators, otherwise confined and gapped by a magnetic texture. By numerically solving the (2 + 1) Dirac equation for the wave packet dynamics, we extract the energy spectrum of the coupled dots as a function of bias-controlled coupling and an external perpendicular magnetic field. We show that the tunneling energy can be ...


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