Abstract
Low-frequency noise in metallic single walled carbon nanotubes is shown to be strongly dependent on the Fermi level position and the applied electric field across the nanotube. Resonance-like enhancement observed near optical phonon energy only when the Fermi level lies near the Dirac point is correlated to Raman G-band softening and broadening. The results suggest that the competition between zone-center and zone-boundary phonon scattering is the underlying origin of the large enhancement and resonance-like behavior of 1/f noise.
Original language | English (US) |
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Article number | 215501 |
Journal | Physical review letters |
Volume | 103 |
Issue number | 21 |
DOIs | |
State | Published - Nov 16 2009 |
ASJC Scopus subject areas
- Physics and Astronomy(all)