Electronic structure of the contact between carbon nanotube and metal electrodes
Applied Physics Letters
American Institute of Physics
Dag, S., Gülseren, O., Ciraci, S., & Yildirim, T. (2003). Electronic structure of the contact between carbon nanotube and metal electrodes. Applied Physics Letters, 83(15), 3180-3182.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/11280
Our first-principles study of the contact between a semiconducting single-walled carbon nanotube (s-SWNT) and metal electrodes shows that the electronic structure and potential depend strongly on the type of metal. The s-SWNT is weakly side-bonded to the gold surface with minute charge rearrangement and remains semiconducting. A finite potential barrier forms at the contact region. In contrast, the molybdenum surface forms strong bonds, resulting in significant charge transfer and metallicity at the contact. The radial deformation of the tube lowers the potential barrier at the contact and increases the state density at the Fermi level. (C) 2003 American Institute of Physics.
- Department of Physics