Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-09-06
Nat. Commun. 1, 37 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 3 figures. Published in Nature Communications. Free online access to the published version until Sept 30th, 2010, see
Scientific paper
10.1038/ncomms1034
Fullerene peapods, that is carbon nanotubes encapsulating fullerene molecules, can offer enhanced functionality with respect to empty nanotubes. However, the present incomplete understanding of how a nanotube is affected by entrapped fullerenes is an obstacle for peapods to reach their full potential in nanoscale electronic applications. Here, we investigate the effect of C60 fullerenes on electron transport via peapod quantum dots. Compared to empty nanotubes, we find an abnormal temperature dependence of Coulomb blockade oscillations, indicating the presence of a nanoelectromechanical coupling between electronic states of the nanotube and mechanical vibrations of the fullerenes. This provides a method to detect the C60 presence and to probe the interplay between electrical and mechanical excitations in peapods, which thus emerge as a new class of nanoelectromechanical systems.
Ferone Raffaello
Jonson Mats
Krive Ilya V.
Monthioux Marc
Noé Laure
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