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

2 Scopus citations


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
Issue number6 SPEC. ISS.
StatePublished - Oct 2006

Bibliographical note

Funding Information:
This research was supported by KISTEP under the contract No. M6-0301-00-0005, Ministry of Science and Technology (MOST), Korea. The work done in Sweden was supported by the Swedish Foundation for Strategic Research (Caramel consortium) and STINT. Partial support for YWP was done by the Royal Swedish Academy of Sciences.


  • Random telegraph noise
  • Single-walled carbon nanotubes


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