PREDICTION OF ELECTRON DRIFT VELOCITY IN HELICALLY COILED CARBON NANOTUBES

Authors

  • Zoran P. Popović NanoLab, Center for Quantum Theoretical Physics, Faculty of Physics, University of Belgrade, Studentski trg 12, Belgrade, Serbia
  • Tatjana Vuković NanoLab, Center for Quantum Theoretical Physics, Faculty of Physics, University of Belgrade, Studentski trg 12, Belgrade, Serbia
  • Božidar Nikolić NanoLab, Center for Quantum Theoretical Physics, Faculty of Physics, University of Belgrade, Studentski trg 12, Belgrade, Serbia
  • Milan Damnjanović NanoLab, Center for Quantum Theoretical Physics, Faculty of Physics, University of Belgrade, Studentski trg 12, Belgrade, Serbia
  • Ivanka Milošević NanoLab, Center for Quantum Theoretical Physics, Faculty of Physics, University of Belgrade, Studentski trg 12, Belgrade, Serbia

DOI:

https://doi.org/10.7251/cm.v2i7.4230

Abstract

We studied electron transport in single wall carbon nanotubes placed in stationary homogeneous electric fields, oriented along tubes. Electron distributions for various electric fields are determined by solving stationary multi bands Boltzmann transport equation in presence of electron phonon scattering mechanisms. Contributions of all possible scattering channels, allowed by selection rules and energy conservation, are taken into account for finding scattering rate and collision integrals. As it is previously predicted, large electron drift velocities in straight single wall carbon nanotubes are obtained.  Frequent electron scattering as well as low group velocity have strong impact on reduction of drift velocity in helically coiled carbon nanotubes. 

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Published

2017-12-29