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

URN zum Zitieren dieses Dokuments:: urn:nbn:de:bvb:355-epub-108548
DOI zum Zitieren dieses Dokuments:: 10.5283/epub.10854

Rycerz, Adam

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Veröffentlichungsdatum dieses Volltextes: 07 Nov 2009 17:43

Alternative Links zum Volltext:Arxiv Verlag

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Zusammenfassung

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 ...