Resonant magneto-conductance of a suspended carbon nanotube quantum dot

Gianluca Rastelli (1) , Manuel Houzet (2) , Fabio Pistolesi (1, 3)

1 LPM2C - Laboratoire de physique et modélisation des milieux condensés
2 INAC - Institut Nanosciences et Cryogénie
3 CPMOH - Centre de physique moléculaire optique et hertzienne

We address the electronic resonant transport in presence of a transverse magnetic field through the single level of a suspended carbon nanotube acting as a quantum oscillator. We predict a negative magneto-conductance with a magnetic-field induced narrowing of the resonance line and a reduction of the conductance peak when the nanotube is asymmetrically contacted to the leads. At finite bias voltage we study the threshold for phonon-assisted transport.

Mots clés: Electronic transport in nanoscale materials and structures; Polarons and electron-phonon interactions; Quantum dots; Micro- and nano-electromechanical systems (MEMS/NEMS) and devices

Domaines: Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Gianluca Rastelli, Manuel Houzet, Fabio Pistolesi. Resonant magneto-conductance of a suspended carbon nanotube quantum dot. EPL - Europhysics Letters, 2010, 86 (5), pp.57003 (1-6). ⟨10.1209/0295-5075/89/57003⟩. ⟨hal-00399563⟩