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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
Rycerz, Adam
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Date of publication of this fulltext: 07 Nov 2009 17:43



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 ...

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