Advanced Materials, Vol.20, No.1, 189-189, 2008
The inner shell influence on the electronic structure of double-walled carbon nanotubes
We present STM and STS results obtained for double-walled carbon nanotubes. In the case displayed here, the STS results exhibit the Van Hove singularities corresponding to semi conducting tubes for both the outer and the inner shell and a finite density of states at the Fermi level (E-F) is observed for a DWNT. We associate this behavior to the presence of an intershell interaction.