Interplay of magneto-elastic and polaronic effects in electronic transport through suspended carbon-nanotube quantum dots

Gianluca Rastelli (1) , Manuel Houzet (2) , Leonid I. Glazman (3) , Fabio Pistolesi (4)

1 LPM2C - Laboratoire de physique et modélisation des milieux condensés
2 INAC - Institut Nanosciences et Cryogénie
3 department of physics, Yale University
4 LOMA - Laboratoire Ondes et Matière d'Aquitaine

We investigate the electronic transport through a suspended carbon-nanotube quantum dot. In the presence of a magnetic field perpendicular to the nanotube and a nearby metallic gate, two forces act on the electrons: the Laplace and the electrostatic force. They both induce coupling between the electrons and the mechanical transverse oscillation modes. We find that the difference between the two mechanisms appears in the cotunneling current.

Mots clés: electronic transport in mesoscopic systems; polarons; quantum dots; NEMS

Domaines: Physique Quantique [quant-ph]; Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Gianluca Rastelli, Manuel Houzet, Leonid I. Glazman, Fabio Pistolesi. Interplay of magneto-elastic and polaronic effects in electronic transport through suspended carbon-nanotube quantum dots. Comptes Rendus. Physique, 2012, 13 (issue 5 (June 2012)), p. 410-425. ⟨10.1016/j.crhy.2012.03.001⟩. ⟨hal-00669002⟩