Electrical conductance and breakdown in individual CNx multiwalled nanotubes

Burch, H. J. , Davies, J. A., Brown, E., Hao, L., Contera, S. A., Grobert, N. and Ryan, J.F. (2006) Electrical conductance and breakdown in individual CNx multiwalled nanotubes. Applied Physics Letters, 89(14), 143110. (doi:10.1063/1.2358308)

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Abstract

Doping of carbon nanotubes with nitrogen during growth strongly modifies their electronic structure through nnn-type doping. This provides the possibility of producing nanotubes with high conductances, independent of tube chirality. To date, electrical measurements on individual nitrogen-doped multiwalled nanotubes (CNxCNxCNxMWNTs) have reported surprisingly low conductances(∼0.01G0)(∼0.01G0)(∼0.01G0). Here the authors present high conductance(1.0±0.3G0(1.0±0.3G0(1.0±0.3G0) measurements at low bias for individual CNxCNxCNxMWNTs.Conductance increases linearly with voltage at a rate of 0.7±0.2G0∕V0.7±0.2G0∕V0.7±0.2G0∕V until the threshold for electrical breakdown is reached. Discrete current steps of 20±10μA20±10μA20±10μA are then observed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hamnett, Dr Hilary
Authors: Burch, H. J., Davies, J. A., Brown, E., Hao, L., Contera, S. A., Grobert, N., and Ryan, J.F.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN:0003-6951
ISSN (Online):1077-3118

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