Sub-Poissonian Shot Noise in Graphene

Tworzydlo, Jakub; Trauzettel, Björn; Titov, M.; Rycerz, Adam; Beenakker, Carlo W. J.

Sub-Poissonian Shot Noise in Graphene

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Datum

2006

Autor:innen

Tworzydlo, Jakub

Trauzettel, Björn

Titov, M.

Rycerz, Adam

Beenakker, Carlo W. J.

Open Access-Veröffentlichung

Open Access Green

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Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. 2006, 96(24), 246802. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.96.246802

Zusammenfassung

We 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 e²=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, 3 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.

Fachgebiet (DDC)

530 Physik

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ISO 690

TWORZYDLO, Jakub, Björn TRAUZETTEL, M. TITOV, Adam RYCERZ, Carlo W. J. BEENAKKER, 2006. Sub-Poissonian Shot Noise in Graphene. In: Physical Review Letters. 2006, 96(24), 246802. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.96.246802

BibTex

@article{Tworzydlo2006SubPo-9076,
  year={2006},
  doi={10.1103/PhysRevLett.96.246802},
  title={Sub-Poissonian Shot Noise in Graphene},
  number={24},
  volume={96},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Tworzydlo, Jakub and Trauzettel, Björn and Titov, M. and Rycerz, Adam and Beenakker, Carlo W. J.},
  note={Article Number: 246802}
}

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