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