Electron transport and quantum-dot energy levels in Z-shaped graphene nanoconstriction with zigzag edges

URN to cite this document:: urn:nbn:de:bvb:355-epub-108548
DOI to cite this document:: 10.5283/epub.10854

Rycerz, Adam

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Date of publication of this fulltext: 07 Nov 2009 17:43

Alternative links to fulltext:Arxiv Publisher

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Abstract

Motivated by recent advances in fabricating graphene nanostructures, we find that an electron can be trapped in Z-shaped graphene nanoconstriction with zigzag edges. The central section of the constriction operates as a single-level quantum dot, as the current flow towards the adjunct sections (rotated by 60 degree) is strongly suppressed due to mismatched valley polarization, although each ...