Coupling of shells in a carbon nanotube quantum dot
arXiv:1809.07143 · doi:10.1103/PhysRevB.99.035422
Abstract
We systematically study the coupling of longitudinal modes (shells) in a carbon nanotube quantum dot. Inelastic cotunneling spectroscopy is used to probe the excitation spectrum in parallel, perpendicular and rotating magnetic fields. The data is compared to a theoretical model including coupling between shells, induced by atomically sharp disorder in the nanotube. The calculated excitation spectra show good correspondence with experimental data.
8 pages, 4 figures
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