Diffusion and localization in carbon nanotubes and graphene nanoribbons
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We study transport length scales in carbon nanotubes and graphene ribbons under the influence of Anderson disorder. We present generalized analytical expressions for the density of states, the elastic mean free path and the localization length in arbitrarily structured quantum wires. These allow us to analyze the electrical response over the full energy range, including the regions around van Hove singularities, traditionally difficult to access by alternative approaches. Comparing with the results of numerical simulations, we demonstrate that both the diffusive and the localized regime are well represented by the analytical approximations over a wide range of the energy spectrum. The approach works well for both metallic and semiconducting nanotubes and nanoribbons but breaks down near the edge states of zigzag ribbons.
Details
Original language | English |
---|---|
Article number | 065014 |
Number of pages | 9 |
Journal | New journal of physics |
Volume | 10 |
Publication status | Published - 30 Jun 2008 |
Peer-reviewed | Yes |
External IDs
Scopus | 47149099969 |
---|
Keywords
Keywords
- Edge, Transport, Systems, Ribbons, State