Volume 89, Number 5, March 2010
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||19 March 2010|
Resonant magneto-conductance of a suspended carbon nanotube quantum dot
Laboratoire de Physique et Modélisation des Milieux Condensés, Université Joseph Fourier and CNRS F-38042 Grenoble, France, EU
2 CEA, INAC, SPSMS - F-38054 Grenoble, France, EU
3 Centre de Physique Moleculaire Optique et Hertzienne, Université de Bordeaux I and CNRS F-33405 Talence, France, EU
Corresponding author: firstname.lastname@example.org
Accepted: 17 February 2010
We address the electronic resonant transport in the 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.
PACS: 73.63.-b – Electronic transport in nanoscale materials and structures / 71.38.-k – Polarons and electron-phonon interactions / 85.85.+j – Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
© EPLA, 2010
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