Abstract
The electron transport properties of well-contacted individual single-walled carbon nanotubes are investigated in the ballistic regime. Phase coherent transport and electron interference manifest as conductance fluctuations as a function of Fermi energy. Resonance with standing waves in finite-length tubes and localized states due to imperfections are observed for various Fermi energies. Two units of quantum conductance are measured for the first time, corresponding to the maximum conductance limit for ballistic transport in two channels of a nanotube.
- Received 27 February 2001
DOI:https://doi.org/10.1103/PhysRevLett.87.106801
©2001 American Physical Society