Condensed Matter PhysicsDuke Physics
Condensed Matter Seminar Series
Electrical Measurements of
Individual Single-Wall Carbon Nanotubes
David Cobden
University of Warwick
Thursday, September 7, 1:30pm, Room 054
| The results of recent experiments on transport through individual single walled nanotubes and nanotube bundles will be reviewed. The list of phenomena observed in these 1D electronic conductors already includes 1D quantum dots, Luttinger-liquid behavior, transistor action and 1D Schottky diodes, ballistic transport, current limiting, superconductivity, chemical doping, and electromechanical coupling. In our studies, we find that nanotube quantum dots are in some ways more ?ideal? than semiconductor quantum dots, but in other ways very different. With metallic contacts, our tubes resemble diffusive quantum wires. In the intermediate contact regime, cotunneling and Kondo physics can dominate. We also look at the effect of the substrate on transport through tubes. |