Dynamics and Dissipation induced by Single-Electron Tunneling in Carbon Nanotube Nanoelectromechanical Systems

Abstract

We demonstrate the effect of single-electron tunneling (SET) through a carbon nanotube quantum dot on its nanomechanical motion. We find that the frequency response and the dissipation of the nanoelectromechanical system (NEMS) to SET strongly depends on the electronic environment of the quantum dot, in particular on the total dot capacitance and the tunnel coupling to the metal contacts. Our findings suggest that one could achieve quality factors of 10${}^6$ or higher by choosing appropriate gate dielectrics and/or by improving the tunnel coupling to the leads.

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• Quality factor enhancement of Nano electromechanical systems by capacitive driving beyond the resonance
• Steady-state Peierls transition in nanotube quantum simulator
• Controlled assembly of graphene sheets and nanotubes: fabrication of suspended multi-element all-carbon vibrational structures
• Resonator induced quantum phase transitions in a hybrid Josephson junction