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External Electric Field Effect on Electrons Transport in Carbon Nanotubes
Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
Department of Applied Physics, University for Development Studies, Navorongo, Ghana
Department of Physics, The Pennsylvania State University, Altoona, USA; Materials Research Institute, The Pennsylvania State University, University Park, USA
Department of Mathematics, University of Cape Coast, Cape Coast, Ghana
Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
Department of Applied Physics, University for Development Studies, Navorongo, Ghana
- 1 Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
- 2 Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
- 3 Department of Applied Physics, University for Development Studies, Navorongo, Ghana
- 4 Department of Physics, The Pennsylvania State University, Altoona, USA; Materials Research Institute, The Pennsylvania State University, University Park, USA
- 5 Department of Mathematics, University of Cape Coast, Cape Coast, Ghana
- 6 Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
- 7 Department of Physics, Laser and Fibre Optics Centre, University of Cape Coast, Cape Coast, Ghana
- 8 Department of Applied Physics, University for Development Studies, Navorongo, Ghana
World Journal of Condensed Matter Physics·Volume 03 (2013)·Pages 169–172·Published 14 October 2013·DOI10.4236/wjcmp.2013.34027
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Abstract
We consider a simple model of carbon nanotubes (CNTs) subject to external electric field E ( t ). Using a tight-binding approximation for the description of energy bands of CNTs, together with the standard Boltzmann transport equation and constant relaxation time, we predict the effect of self-induced transparency and absolute negative conductivity. The predicted effects may be useful in diagnostics of carbon nanotubes as well as in the amplification and efficiency con version of electromagnetic signals.
KeywordsCarbon NanotubesElectric FieldElectric Current DensityNegative Differential Conductivity
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