Random telegraph noise in carbon nanotubes and peapods

S. H. Jhang, S. W. Lee, D. S. Lee, H. Y. Yu, U. Dettlaff, E. E.B. Campbell, S. Roth, Y. W. Park

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The switching of resistance between two discrete values, known as random telegraph noise (RTN), was observed in individual single-walled carbon nanotubes (SWNTs) and C60-filled SWNTs (the so-called peapods). The RTN has been studied as a function of bias-voltage and gate-voltage as well as temperature. By analyzing the features of the RTN, we identify three different types of RTN existing in the SWNT related systems. While the RTN can be generated by the various charge traps in the vicinity of the SWNTs, the RTN for metallic SWNTs is mainly due to reversible defect motions between two metastable states, activated by inelastic scattering with ballistic electrons. On the other hand, the noise for peapods can be attributed to the motion of C60 molecules in hollow space of SWNTs.

Original languageEnglish
Pages (from-to)987-991
Number of pages5
JournalCurrent Applied Physics
Volume6
Issue number6 SPEC. ISS.
DOIs
StatePublished - Oct 2006

Keywords

  • Random telegraph noise
  • Single-walled carbon nanotubes

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