Pumping of vibrational excitations in a Coulomb blockaded suspended carbon nanotube

Abstract

Low-temperature transport spectroscopy measurements on a suspended few-hole carbon nanotube quantum dot are presented, showing a gate-dependent harmonic excitation spectrum which, strikingly, occurs in the Coulomb blockade regime. The quantized excitation energy corresponds to the scale expected for longitudinal vibrations of the nanotube. The electronic transport processes are identified as cotunnel-assisted sequential tunneling, resulting from non-equilibrium occupation of the mechanical mode. They appear only above a high-bias threshold at the scale of electronic nanotube excitations. We discuss models for the pumping process that explain the enhancement of the non-equilibrium occupation and show that it is connected to a subtle interplay between electronic and vibrational degrees of freedom.

References in corpus (12)

• A tunable carbon nanotube electromechanical oscillator
• Measurement of the conductance of a hydrogen molecule
• Coupling of Spin and Orbital Motion of Electrons in Carbon Nanotubes
• Electrical generation and absorption of phonons in carbon nanotubes
• Franck-Condon blockade in suspended carbon nanotube quantum dots
• Vibrational sidebands and dissipative tunneling in molecular transistors
• Tunneling in suspended carbon nanotubes assisted by longitudinal phonons
• Electron-hole symmetry in a semiconducting carbon nanotube quantum dot
• Kinetic Equations for Transport Through Single-Molecule Transistors
• Cotunneling-mediated transport through excited states in the Coulomb blockade regime
• A triple quantum dot in a single wall carbon nanotube
• Vibrational absorption sidebands in the Coulomb blockade regime of single-molecule transistors

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