Bloch-Zener Oscillations in Graphene and Topological Insulators

URN to cite this document:: urn:nbn:de:bvb:355-epub-232064

Krueckl, Viktor ; Richter, Klaus

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Date of publication of this fulltext: 19 Jan 2012 07:17

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Abstract

We show that superlattices based on zero-gap semiconductors such as graphene and mercury telluride exhibit characteristic Bloch--Zener oscillations that emerge from the coherent superposition of Bloch oscillations and multiple Zener tunneling between the electron and hole branch. We demonstrate this mechanism by means of wave packet dynamics in various spatially periodically modulated nanoribbons ...