MICCHI, G.; AVRILLER, R.; PISTOLESI, F.

doi:10.1103/PhysRevLett.115.206802

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MICCHI, G.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

AVRILLER, R.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

PISTOLESI, F.
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Article de revue

Ce document a été publié dans

Physical Review Letters. 2015-11-13, vol. 115, n° 20, p. 206802 (1-5)

American Physical Society

Résumé en anglais

Transport measurements allow sensitive detection of nanomechanical motion of suspended carbon nanotubes. It has been predicted that when the electro-mechanical coupling is sufficiently large a bistability with a current blockade appears. Unambiguous observation of this transition by current measurements may be difficult. Instead, we investigate the mechanical response of the system, namely the displacement spectral function; the linear response to a driving; and the ring-down behavior. We find that by increasing the electro-mechanical coupling the peak in the spectral function broadens and shifts at low frequencies while the oscillator dephasing time shortens. These effects are maximum at the transition where non-linearities dominate the dynamics. These strong signatures open the way to detect the blockade transition in devices currently studied by several groups.< Réduire

Mots clés en anglais

Current Blockade

Electro-Mechanical Coupling

Single-Electron Transport

Non-Linear Effects

Ring-Down Time

NEMS

Suspended Carbon Nanotubes

DOI

http://dx.doi.org/10.1103/PhysRevLett.115.206802

Project ANR

Nano Mécanique Quantique - ANR-10-BLAN-0404

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798