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Temperature-dependent diffusive to ballistic transport transition in aligned double walled carbon nanotubes in the high frequency regime

Chimowa, George and Flahaut, Emmanuel and Bhattacharyya, Somnath Temperature-dependent diffusive to ballistic transport transition in aligned double walled carbon nanotubes in the high frequency regime. (2014) Applied Physics Letters, 105 (17). 173511. ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.4901025

Abstract

Low-temperature induced diffusive to ballistic transport in aligned double walled carbon nanotubes (DWNT) is reported. This is evidenced by a crossover of the imaginary (reactive) component of the alternating current impedance being greater than the real (resistive) component, which happens in the range of 9 GHz–1.5 GHz at temperatures77K and 4K from which we estimate a long lifetime of 17 ps and 106 ps in DWNTs, respectively. By simulating the measured scattering parameters of a few aligned DWNTs over a wide temperature range, we show that this observation is strongly influenced by the electrode–DWNT coupling strength

Item Type:Article
Additional Information:Thanks to AIP Publishing. The definitive version is available at http://aip.scitation.org/ The original PDF of the article can be found at http://aip.scitation.org/doi/full/10.1063/1.4901025
HAL Id:hal-01447806
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > University of the Witwatersrand - WITS (SOUTH AFRICA)
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Deposited By: cirimat webmestre
Deposited On:27 Jan 2017 10:41

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