Shot noise suppression and hopping conduction in graphene nanoribbons

R. Danneau, F. Wu, M. Y. Tomi, J.B. Oostinga, A.F. Morpurgo, P. J. Hakonen

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)
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Abstract

We have investigated shot noise and conduction of graphene field-effect nanoribbon devices at low temperature. By analyzing the exponential I−V characteristics of our devices in the transport gap region, we found out that transport follows variable range hopping laws at intermediate bias voltages 1<Vbias<12 mV. In parallel, we observe a strong shot noise suppression leading to very low Fano factors. The strong suppression of shot noise is consistent with inelastic hopping, in crossover from one- to two-dimensional regime, indicating that the localization length lloc<W in our nanoribbons.
Original languageEnglish
Article number161405
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B
Volume82
Issue number16
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Keywords

  • phenomena
  • Shot noise

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