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

Academic Article
Publication Date:
2012
abstract:
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. Nous étudions le transport électronique à travers un point quantique formé avec un nanotube de carbone suspendu. En présence d'un champ magnétique perpendiculaire au nanotube et d'une grille métallique, deux forces agissent sur les électrons: la force de Laplace et la force électrostatique. Elles induisent toutes les deux un couplage entre les électrons et les modes d'oscillations mécaniques transverses. Nous trouvons qu'une différence entre les deux mécanismes de couplage se manifeste à des ordres supérieurs dans le courant tunnel. © 2012.
Iris type:
01.01 Articolo in rivista
Keywords:
Nano-electromechanical system; Polaron; Quantum dot
List of contributors:
Rastelli, Gianluca
Authors of the University:
RASTELLI GIANLUCA
Handle:
https://iris.cnr.it/handle/20.500.14243/402157
Published in:
COMPTES RENDUS PHYSIQUE
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http://www.scopus.com/record/display.url?eid=2-s2.0-84861828728&origin=inward
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