Molecular states in carbon nanotube double quantum dots
Graeber, M. R. · Coish, W. A. · Hoffmann, C. · Weiss, M. · Furer, J. · Oberholzer, S. · Loss, D. · Schoenenberger, C.
Original · EN
We report electrical transport measurements through a semiconducting single-walled carbon nanotube (SWNT) with three additional top-gates. At low temperatures the system acts as a double quantum dot with large inter-dot tunnel coupling allowing for the observation of tunnel-coupled molecular states extending over the whole double-dot system. We precisely extract the tunnel coupling and identify the molecular states by the sequential-tunneling line shape of the resonances in differential conductance.
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