Shot noise in lithographically patterned graphene nanoribbons

Z.B. Tan, A. Puska, T. Nieminen, F. Duerr, C. Gould, LW. Molenkamp, B. Trauzettel, P.J. Hakonen

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
139 Downloads (Pure)


We have investigated shot noise and conductance of multiterminal graphene nanoribbon devices at temperatures down to 50 mK. Away from the charge neutrality point, we find a Fano factor F≈0.4, nearly independent of the charge density. Our shot noise results are consistent with theoretical models for disordered graphene ribbons with a dimensionless scattering strength K0≈10 corresponding to rather strong disorder. Close to charge neutrality, an increase in F up to ∼0.7 is found, which indicates the presence of a dominant Coulomb gap possibly due to a single quantum dot in the transport gap.
Original languageEnglish
Article number245415
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B
Issue number24
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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