Electron-vibron coupling in suspended nanotubes

Abstract

We consider the electron-vibron coupling in suspended nanotube quantum dots. Modelling the tube as an elastic medium, we study the possible coupling mechanism for exciting the stretching mode in a single-electron-transistor setup. Both the forces due to the longitudinal and the transverse fields are included. The effect of the longitudinal field is found to be too small to be seen in experiment. In contrast, the transverse field which couple to the stretching mode via the bending of the tube can in some cases give sizeable Franck-Condon factors. However, the length dependence is not compatible with recent experiments [Sapmaz et al. cond-mat/0508270].

12 pages, 4 figures

References in corpus (8)

• Vibrational sidebands and dissipative tunneling in molecular transistors
• First Principles Study of Work Functions of Single Wall Carbon Nanotubes
• Modelling a suspended nanotube oscillator
• Full counting statistics of strongly non-Ohmic transport through single molecules
• Three-terminal scanning tunneling spectroscopy of suspended carbon nanotubes
• Electromechanical instability in suspended carbon nanotubes
• Phonon-assisted tunneling in interacting suspended single wall carbon nanotubes
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Cited by in corpus (16)

• Quantum transport in carbon nanotubes
• Electron-vibron coupling in suspended carbon nanotube quantum dots
• Asymmetric Franck-Condon factors in suspended carbon nanotube quantum dots
• Coherent properties of nano-electromechanical systems
• Euler buckling instability and enhanced current blockade in suspended single-electron transistors
• An electrical probe for mechanical vibrations in suspended carbon nanotubes
• Self-organization of irregular NEM vibrations in multi-mode shuttle structures
• Dynamical symmetry breaking in vibration-assisted transport through nanostructures
• Non-Equilibrium and Quantum Coherent Phenomena in the Electromechanics of Suspended Nanowires
• Interplay of magneto-elastic and polaronic effects in electronic transport through suspended carbon-nanotube quantum dots
• Spectrum and Franck-Condon factors of interacting suspended single-wall carbon nanotubes
• Charge pumping in strongly-coupled molecular quantum dots
• Probing Wigner correlations in a suspended carbon nanotube
• Lifting the Franck-Condon blockade in driven quantum dots
• Relaxation and dynamics of high-stress pre-displaced string resonators
• Evidence for atomic-scale vibron-mediated electron bunching