Quantum-limited shot noise in graphene

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dc.creatorTworzydlo, J.
dc.creatorTrauzettel, B.
dc.creatorTitov, M.
dc.creatorRycerz, A.
dc.creatorBeenakker, C. W. J.
dc.date2006-03-11
dc.date2006-04-10
dc.date.accessioned2026-07-07T07:02:21Z
dc.date.available2026-07-07T07:02:21Z
dc.descriptionWe calculate the mode-dependent transmission probability of massless Dirac fermions through an ideal strip of graphene (length L, width W, no impurities or defects), to obtain the conductance and shot noise as a function of Fermi energy. We find that the minimum conductivity of order e^2/h at the Dirac point (when the electron and hole excitations are degenerate) is associated with a maximum of the Fano factor (the ratio of noise power and mean current). For short and wide graphene strips the Fano factor at the Dirac point equals 1/3, three times smaller than for a Poisson process. This is the same value as for a disordered metal, which is remarkable since the classical dynamics of the Dirac fermions is ballistic.
dc.description6 pages, 3 figures; added an appendix with details of the calculation
dc.identifierhttps://arxiv.org/abs/cond-mat/0603315
dc.identifierhttp://arxiv.org/abs/cond-mat/0603315
dc.identifierPhys. Rev. Lett. 96, 246802 (2006).
dc.identifierdoi:10.1103/PhysRevLett.96.246802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/108572
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuantum-limited shot noise in graphene
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