Edge states in Graphene: from gapped flat band to gapless chiral modes

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dc.creatorYao, Wang
dc.creatorYang, Shengyuan A.
dc.creatorNiu, Qian
dc.date2008-10-12
dc.date2008-10-14
dc.date.accessioned2026-07-07T12:50:44Z
dc.date.available2026-07-07T12:50:44Z
dc.descriptionWe study edge-states in graphene systems where a bulk energy gap is opened by inversion symmetry breaking. We find that the edge-bands dispersion can be controlled by potentials applied on the boundary with unit cell length scale. Under certain boundary potentials, gapless edge-states with valley-dependent velocity are found, exactly analogous to the spin-dependent gapless chiral edge-states in quantum spin Hall systems. The connection of the edge-states to bulk topological properties is revealed.
dc.identifierhttps://arxiv.org/abs/0810.2101
dc.identifierhttp://arxiv.org/abs/0810.2101
dc.identifierPhys. Rev. Lett. 102, 096801 (2009).
dc.identifierdoi:10.1103/PhysRevLett.102.096801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222775
dc.subjectMesoscale and Nanoscale Physics
dc.subjectMaterials Science
dc.titleEdge states in Graphene: from gapped flat band to gapless chiral modes
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