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

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


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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