Magnetic effects on nonlinear mechanical properties of a suspended carbon nanotube

Abstract

We propose a microscopic model for a nanoelectromechanical system made by a radio-frequency driven suspended carbon nanotube (CNT) in the presence of an external magnetic field perpendicular to the current. As a main result, we show that, when the device is driven far from equilibrium, one can tune the CNT mechanical properties by varying the external magnetic field. Indeed, the magnetic field affects the CNT bending mode dynamics inducing an enhanced damping as well as a noise term due to the electronic phase fluctuations. The quality factor, as observed experimentally, exhibits a quadratic dependence on external magnetic field strength. Finally, CNT resonance frequencies as a function of gate voltage acquire, increasing the magnetic field strength, a peculiar dip-peak structure that should be experimentally observed.

15 pages, 9 figures, submitted to Phys. Rev. B

References in corpus (18)

• Strong coupling between single-electron tunneling and nano-mechanical motion
• Carbon nanotubes as ultra-high quality factor mechanical resonators
• Scattering theory of current-induced forces in mesoscopic systems
• Strong coupling between mechanical modes in a nanotube resonator
• Adiabatic pumping through interacting quantum dots
• Single-electron Tunneling with Strong Mechanical Feedback
• Self-consistent theory of molecular switching
• Strong and tunable mode coupling in carbon nanotube resonators
• Probing the charge of a quantum dot with a nanomechanical resonator
• Coupling carbon nanotube mechanics to a superconducting circuit
• Semi-classical dynamics of nano-electromechanical systems
• Electronic Aharonov-Bohm Effect Induced by Quantum Vibrations
• Few-hundred GHz Carbon Nanotube NEMS
• Magnetic damping of a carbon nanotube NEMS resonator
• Magnetization dynamics in dysprosium orthoferrites via inverse Faraday effect
• Coherent properties of nano-electromechanical systems
• Magnetopolaronic effects in electron transport through a single-level vibrating quantum dot
• Interplay of magneto-elastic and polaronic effects in electronic transport through suspended carbon-nanotube quantum dots

Cited by in corpus (12)

• Electron-vibration effects on the thermoelectric efficiency of molecular junctions
• Interplay of charge, spin and lattice degrees of freedom on the spectral properties of the one-dimensional Hubbard-Holstein model
• Charge-vibration interaction effects in normal-superconductor quantum dots
• Single-parameter adiabatic charge pumping in carbon nanotube resonators
• Liquid-induced damping of mechanical feedback effects in single electron tunneling through a suspended carbon nanotube
• Noise-assisted Thouless pump in elastically deformable molecular junctions
• Interplay between electron-electron and electron-vibration interactions on the thermoelectric properties of molecular junctions
• Effects of different electron-phonon couplings on spectral and transport properties of small molecule single-crystal organic semiconductors
• Transient dynamics of an adiabatic NEMS
• Charge and heat transport of soft nanosystems in the presence of time-dependent perturbations
• Creating arbitrary quantum vibrational states in a carbon nanotube
• On the role of local many-body interactions on the thermoelectric properties of fullerene junctions