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Sökning: WFRF:(Utko Pawel)

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1.
  • Krive, Ilya V., et al. (författare)
  • The influence of electro-mechanical effects on resonant electron tunneling through small carbon nano-peapods
  • 2008
  • Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 10
  • Tidskriftsartikel (refereegranskat)abstract
    • The influence of a fullerene molecule trapped inside a single-wall carbon nanotube on resonant electron transport at low temperatures and strong polaronic coupling is theoretically discussed. Strong peak-to-peak fluctuations and anomalous temperature behavior of conductance amplitudes are predicted and investigated. The influence of the chiral properties of carbon nanotubes on transport is also studied.
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3.
  • Utko, Pawel, et al. (författare)
  • Nanoelectromechanical coupling in fullerene peapods probed by resonant electrical transport experiments
  • 2010
  • Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 1
  • Tidskriftsartikel (refereegranskat)abstract
    • Fullerene peapods, which are carbon nanotubes encapsulating fullerene molecules, can offer enhanced functionality with respect to empty nanotubes. Their prospective applications include, for example, data storage devices, single-electron transistors and spin-qubit arrays for quantum computing. 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. In this paper, we investigate the effect of C60 fullerenes on low-temperature electron transport through peapod quantum dots. Compared with 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 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.
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