Topological delocalization of two-dimensional massless Dirac fermions

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dc.creatorNomura, Kentaro
dc.creatorKoshino, Mikito
dc.creatorRyu, Shinsei
dc.date2007-05-11
dc.date2007-08-17
dc.date.accessioned2026-07-07T09:47:02Z
dc.date.available2026-07-07T09:47:02Z
dc.descriptionThe beta function of a two-dimensional massless Dirac Hamiltonian subject to a random scalar potential, which e.g., underlies the theoretical description of graphene, is computed numerically. Although it belongs to, from a symmetry standpoint, the two-dimensional symplectic class, the beta function monotonically increases with decreasing $g$. We also provide an argument based on the spectral flows under twisting boundary conditions, which shows that none of states of the massless Dirac Hamiltonian can be localized.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0705.1607
dc.identifierhttp://arxiv.org/abs/0705.1607
dc.identifierPhys. Rev. Lett. 99, 146806 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.146806
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163734
dc.subjectMesoscale and Nanoscale Physics
dc.titleTopological delocalization of two-dimensional massless Dirac fermions
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