Superconducting Tunneling Spectroscopy of a Carbon Nanotube Quantum Dot
arXiv:0907.2886 · doi:10.1063/1.3253705
Abstract
We report results on superconducting tunneling spectroscopy of a carbon nanotube quantum dot. Using a three-probe technique that includes a superconducting tunnel probe, we map out changes in conductance due to band structure, excited states, and end-to-end bias. The superconducting probe allows us to observe enhanced spectroscopic features, such as robust signals of both elastic and inelastic co-tunneling. We also see evidence of inelastic scattering processes inside the quantum dot.
12 pages, 3 figures