Quantum Blockades and Loop Currents in Graphene with Topological Defects

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dc.creatorZhang, Yan-Yang
dc.creatorHu, Jiang-Ping
dc.creatorBernevig, B. A.
dc.creatorWang, X. R.
dc.creatorXie, X. C.
dc.creatorLiu, W. M.
dc.date2007-11-19
dc.date2008-10-11
dc.date.accessioned2026-07-07T10:08:50Z
dc.date.available2026-07-07T10:08:50Z
dc.descriptionWe investigate the effect of topological defects on the transport properties of a narrow ballistic ribbon of graphene with zigzag edges. Our results show that the longitudinal conductance vanishes at several discrete Fermi energies where the system develops loop orbital electric currents with certain chirality. The chirality depends on the direction of the applied bias voltage and the sign of the local curvature created by the topological defects. This novel quantum blockade phenomenon provides a new way to generate a magnetic moment by an external electric field, which can prove useful in carbon electronics.
dc.description6 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0711.2918
dc.identifierhttp://arxiv.org/abs/0711.2918
dc.identifierPhys. Rev. B 78, 155413 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.155413
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171136
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuantum Blockades and Loop Currents in Graphene with Topological Defects
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